taxonID	type	description	language	source
038987D9FF9FD7610032C1831E03F9B8.taxon	description	Fig. 2	en	Stöhr, Sabine (2024): Taxonomic analysis of the genital plates and associated structures in Ophiuroidea (Echinodermata). European Journal of Taxonomy 933: 1-98, DOI: 10.5852/ejt.2024.933.2525, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2525/11335
038987D9FF9FD7610032C1831E03F9B8.taxon	type_taxon	Type species Asterias ophiura Linnaeus, 1758.	en	Stöhr, Sabine (2024): Taxonomic analysis of the genital plates and associated structures in Ophiuroidea (Echinodermata). European Journal of Taxonomy 933: 1-98, DOI: 10.5852/ejt.2024.933.2525, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2525/11335
038987D9FF9FD7610032C1831E03F9B8.taxon	description	Oral GP Row of nearly vertical scales lines abradial edge of genital slit, proximalmost scale overlapped by lateral edge of oral shield, appears not to articulate or form a pair with opposite scale, hence, oPGs considered absent. Adradial GP Club-like long rod with bulbous distal end, at least three arm segments long, parallel to arm, distal end curving upwards to meet radial shield. Dorsal part of rod-like part round and thickened, ventral part thinner and blade-like flattened. Distal end with two ball-like condyles, differing in size, one bordered adradially by a half-circle-shaped groove, abradially by flat edge. Several depressions between condyles, a rough patch proximal to condyles on dorsal adradial edge. Abradial GP Roughly triangular, cup-shaped (abradially convex), with dorsal beak-like extension, much wider than adGP, two thirds as long as adGP, almost completely exposed at disc edge. Ventral adradial edge with pores, where genital papillae attach (arm comb). Articulates to adGP at right angle, creating wide gap between both GPs. Oral shield Madreporite with hydropore in one lateral distal edge, inner surface flat, smooth stereom, finer along edges, large opening in proximal half. Radial shield With two weakly domed condyles, radial one bordered by distal half-circular groove, articulating with adGP.	en	Stöhr, Sabine (2024): Taxonomic analysis of the genital plates and associated structures in Ophiuroidea (Echinodermata). European Journal of Taxonomy 933: 1-98, DOI: 10.5852/ejt.2024.933.2525, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2525/11335
038987D9FF9FD77C0002C6D91B73FB83.taxon	description	Fig. 3	en	Stöhr, Sabine (2024): Taxonomic analysis of the genital plates and associated structures in Ophiuroidea (Echinodermata). European Journal of Taxonomy 933: 1-98, DOI: 10.5852/ejt.2024.933.2525, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2525/11335
038987D9FF9FD77C0002C6D91B73FB83.taxon	type_taxon	Type species Ophiopyrgus wyvillethomsoni Lyman, 1878.	en	Stöhr, Sabine (2024): Taxonomic analysis of the genital plates and associated structures in Ophiuroidea (Echinodermata). European Journal of Taxonomy 933: 1-98, DOI: 10.5852/ejt.2024.933.2525, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2525/11335
038987D9FF9FD77C0002C6D91B73FB83.taxon	description	Oral GP Absent. Adradial GP Ophiopyrgus saccharatus: rectangular, high, distally swollen, appears rounded axe-shaped in dorsal view, axe-head at abradial edge, adradial side straight, flat, large hole in distal dorsal part, articulates with RS at distal adradial point with round, finer meshed patch. As long as abGP, half as wide. Ophiopyrgus wyvillethomsoni: elongated, irregular, depression in distal abradial edge connects to abGP, flat distal end articulates with RS. Shorter than abGP, half as wide. Abradial GP Ophiopyrgus saccharatus: pear-shaped, stout, as long as but twice as wide as adGP, disto-dorsal depression connects to RS, adradial ventro-distal deep depression curves around adGP. Ophiopyrgus wyvillethomsoni: twice as wide as adGP, stout, distally wider than proximally, pear-shaped. Oral shields Externally, madreporite not distinguishable. Inner sides not examined. Radial shield Ophiopyrgus saccharatus: stout, articular notch in ventro-distal point articulates with adGP, central depression with hole, straight abradial distal edge connects to abGP. Ophiopyrgus wyvillethomsoni: articular structure a low knob / condyle in middle of distal end.	en	Stöhr, Sabine (2024): Taxonomic analysis of the genital plates and associated structures in Ophiuroidea (Echinodermata). European Journal of Taxonomy 933: 1-98, DOI: 10.5852/ejt.2024.933.2525, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2525/11335
038987D9FF9FD77C0002C6D91B73FB83.taxon	discussion	Remarks The family Ophiopyrgidae contains several paedomorphic genera (Stöhr & Martynov 2016), including the type genus Ophiopyrgus, with a strongly juvenile appearance. Unusual among the studied species is that in O. saccharatus the abradial GP connects broadly to the radial shield, and apart from the oral shield, the abGPs are the only plates on the ventral disc. Externally, the radial shields resemble disc scales in shape and size. Ophiosparte gigas Koehler, 1922 was included in Ophiopyrgidae by molecular data (O’Hara et al. 2017), but its adGP is bar-like, distally inflated, and its abGP is cup-shaped, bearing comb papillae (Martynov 2010), and in combination with other characters, such as the superficial oral tentacle pore, oral papillae similar to Ophiura and the large number of tentacle scales, Ophiosparte is morphologically more similar to Ophiura than to any here analysed ophiopyrgid.	en	Stöhr, Sabine (2024): Taxonomic analysis of the genital plates and associated structures in Ophiuroidea (Echinodermata). European Journal of Taxonomy 933: 1-98, DOI: 10.5852/ejt.2024.933.2525, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2525/11335
038987D9FF82D77E007EC48A1A03FB68.taxon	description	Fig. 4	en	Stöhr, Sabine (2024): Taxonomic analysis of the genital plates and associated structures in Ophiuroidea (Echinodermata). European Journal of Taxonomy 933: 1-98, DOI: 10.5852/ejt.2024.933.2525, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2525/11335
038987D9FF82D77E007EC48A1A03FB68.taxon	type_taxon	Type species Ophioglypha bullata Thomson, 1877.	en	Stöhr, Sabine (2024): Taxonomic analysis of the genital plates and associated structures in Ophiuroidea (Echinodermata). European Journal of Taxonomy 933: 1-98, DOI: 10.5852/ejt.2024.933.2525, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2525/11335
038987D9FF82D77E007EC48A1A03FB68.taxon	description	Oral GP Absent. Adradial GP Amphiophiura latro: spatulate, stout, half as wide as long, proximally tapered, articular structures flat patches of finer meshed stereom. Abradial side with longitudinal groove and large hole in distal part. Twice as long as abGP. Amphiophiura insolita: stout, wedge-shaped, half as wide as long, dorsally concave, ventrally convex, proximally tapered, distal end widened, articular surface to RS flat, extending to middle of plate, protruding laterally. Abradial ventrodistal part with articular structure with abGP of coarse stereom. Abradial GP Amphiophiura latro: shorter than adGP, twice as high as long. Exposed distal end inflated, slightly curved, with tuberculous stereom, small round articular holes without lobes for genital papillae, inner part with simple stereom, as high and long as outer part, but much thinner. Amphiophiura insolita: shorter than adGP, broad diamond-shaped. Exposed distal end slightly curved, with weakly tuberculous stereom, small round articular holes without lobes for genital papillae; inner part with simple stereom, proximal end tapered, proximal third flat, thinner than inflated distal two thirds. Adradial edge slanting, a round depression with coarse stereom close to edge with articular structure to adGP. Oral shields Amphiophiura latro: covering large part of ventral disc, inner side with one round spur on either side of proximal part. Madreporite with large hole in proximal part between spurs, opening to one side. Amphiophiura insolita: covering all of ventral disc. Madreporite with large hole near proximal edge, no side opening. Radial shield Amphiophiura latro: articular structures a shallow depression and a small round, finer meshed patch at the distal internal edge. A round, finer meshed patch in the centre of the inner surface. Amphiophiura insolita: articular structure a wide flat surface extending from distal edge to middle of plate, thicker than proximal part. Lateral in distal edge a short slit.	en	Stöhr, Sabine (2024): Taxonomic analysis of the genital plates and associated structures in Ophiuroidea (Echinodermata). European Journal of Taxonomy 933: 1-98, DOI: 10.5852/ejt.2024.933.2525, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2525/11335
038987D9FF82D77E007EC48A1A03FB68.taxon	discussion	Remarks The genus Amphiophiura Matsumoto, 1915 is regarded as paedomorphic (Stöhr & Martynov 2016), but contrary to expectations, the genital plates are large and well differentiated. There is a stout conical adGP with a flat articular structure, and, in contrast to most other species, a much larger abGP, partially exposed at the disc edge, bearing an arm comb of genital papillae. Although the arm comb is similar to that of Ophiura, species in that genus have an exposed cup-shaped abGP that does not extend far into the disc. In several species of Amphiophiura the genital slit borders the large oral shield laterally.	en	Stöhr, Sabine (2024): Taxonomic analysis of the genital plates and associated structures in Ophiuroidea (Echinodermata). European Journal of Taxonomy 933: 1-98, DOI: 10.5852/ejt.2024.933.2525, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2525/11335
038987D9FF80D77F0057C4E01B7AFC6E.taxon	description	Fig. 5	en	Stöhr, Sabine (2024): Taxonomic analysis of the genital plates and associated structures in Ophiuroidea (Echinodermata). European Journal of Taxonomy 933: 1-98, DOI: 10.5852/ejt.2024.933.2525, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2525/11335
038987D9FF80D77F0057C4E01B7AFC6E.taxon	type_taxon	Type species Ophiopleura borealis Danielssen & Koren, 1877. Examined species Ophiopleura borealis. Oral GP Absent. Adradial GP Blade-like long, dorsalwards curved, distally thicker with one weakly domed condyle and one condylar process with flat end, one circular smooth dorsal depression with thick rim (suction cup-shaped), one oval adradial embossed articular structure with coarser stereom. Ventral half thinner than dorsal. Abradial GP As long as adGP, weakly curved, concave dorsal surface articulating broadly to ventral abradial part and condylar process on adGP, proximal end strongly tapered to a point. Oral shields Inner side flat, coarse stereom. Madreporite externally with multiple small pores in distal part (not visible on inner side), inner side similar to that of regular oral shield, but large central opening, partially covered by stereom lobes. Radial shield Almost as long as disc radius (most of it covered by scales and thick skin in intact disc), narrow, thin, distal end widened, fragmented into several pieces of varying size during bleaching. Single low condyle on middle of distal end, distally bordered by deep groove; one nearly round, finer meshed depression proximal to condyle.	en	Stöhr, Sabine (2024): Taxonomic analysis of the genital plates and associated structures in Ophiuroidea (Echinodermata). European Journal of Taxonomy 933: 1-98, DOI: 10.5852/ejt.2024.933.2525, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2525/11335
038987D9FF80D77F0057C4E01B7AFC6E.taxon	discussion	Remarks Ophiopleura is one of the more completely developing genera of Ophiopyrgidae, not considered to be paedomorphic. In O. borealis, the adGP and abGP support the genital slit along its full length, between distal end of adoral shield and disc edge, which may explain the absence of oGPs. The radial shields are covered by disc scales, except for their distalmost part, and their appearance, rib-like and radiating from the disc center to the disc margin, as well as their tendency to break into several pieces, is similar to conditions in Euryalida, but they are considerably thinner. The shape of its genital plates is unusual among the here studied species and doesn’t convey its phylogenetic relationships.	en	Stöhr, Sabine (2024): Taxonomic analysis of the genital plates and associated structures in Ophiuroidea (Echinodermata). European Journal of Taxonomy 933: 1-98, DOI: 10.5852/ejt.2024.933.2525, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2525/11335
038987D9FF86D7790031C1591E80FC9C.taxon	description	Fig. 6 A – G	en	Stöhr, Sabine (2024): Taxonomic analysis of the genital plates and associated structures in Ophiuroidea (Echinodermata). European Journal of Taxonomy 933: 1-98, DOI: 10.5852/ejt.2024.933.2525, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2525/11335
038987D9FF86D7790031C1591E80FC9C.taxon	type_taxon	Type species Ophiumusium lymani Wyville-Thomson, 1873.	en	Stöhr, Sabine (2024): Taxonomic analysis of the genital plates and associated structures in Ophiuroidea (Echinodermata). European Journal of Taxonomy 933: 1-98, DOI: 10.5852/ejt.2024.933.2525, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2525/11335
038987D9FF86D7790031C1591E80FC9C.taxon	description	Oral GP Absent. Adradial GP Bar-like, dorsalwards curved, distal end flaring, with one large and one smaller, weakly domed or flat condylar process and curved groove; proximal to processes a large, nearly circular depression with coarser stereom. At middle of ventral edge, a fin-like process, which articulates with abGP. Abradial GP Large, as long as adGP, triangular, thick, a longitudinal ridge divides the plate in two slanting halves. Almost completely exposed on ventral disc. Oral shields Inner side flat, distally a triangular patch of smooth stereom with minute pores, in centre coarsely meshed stereom, proximally finer meshed. Madreporite strongly thickened, flatter smooth triangular patch distally, large central opening (externally no hydropore visible). Radial shield At middle of distal edge, a low condyle, bordered distally by narrow groove, proximal to condyle a circular patch with finer stereom.	en	Stöhr, Sabine (2024): Taxonomic analysis of the genital plates and associated structures in Ophiuroidea (Echinodermata). European Journal of Taxonomy 933: 1-98, DOI: 10.5852/ejt.2024.933.2525, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2525/11335
038987D9FF86D7790031C1591E80FC9C.taxon	discussion	Remarks The disc skeleton of Ophiomusa lymani consists of a small number of large, tightly adjoining plates and few smaller dorsal scales. It is considered to be a paedomorphic species (Stöhr & Martynov 2016). The abGP makes up a considerable part of the ventral disc covering. The genital slits are not obvious. The rough patches on adGP and RS seem to be positioned opposite to each other and are likely connected by muscle fibres.	en	Stöhr, Sabine (2024): Taxonomic analysis of the genital plates and associated structures in Ophiuroidea (Echinodermata). European Journal of Taxonomy 933: 1-98, DOI: 10.5852/ejt.2024.933.2525, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2525/11335
038987D9FF87D7790004C3A61BF9F832.taxon	description	Fig. 6 H	en	Stöhr, Sabine (2024): Taxonomic analysis of the genital plates and associated structures in Ophiuroidea (Echinodermata). European Journal of Taxonomy 933: 1-98, DOI: 10.5852/ejt.2024.933.2525, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2525/11335
038987D9FF87D7790004C3A61BF9F832.taxon	type_taxon	Type species Astrophiura permira Sladen, 1879.	en	Stöhr, Sabine (2024): Taxonomic analysis of the genital plates and associated structures in Ophiuroidea (Echinodermata). European Journal of Taxonomy 933: 1-98, DOI: 10.5852/ejt.2024.933.2525, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2525/11335
038987D9FF87D7790004C3A61BF9F832.taxon	description	Oral GP Absent. Adradial GP Bar-like, flat for most of its length, proximal end rounded, distal to midpoint a fin-like ventral process, distal end thicker, upwards curved, edge straight, depressed, no condyles. Abradial GP Not examined, possibly absent, since no genital slits were seen. Oral shields Madreporite large, pentagonal, externally domed, small hydropore near a lateral edge, inner side not examined. Other OS not identifiable, considered absent. Radial shield Inner side not examined.	en	Stöhr, Sabine (2024): Taxonomic analysis of the genital plates and associated structures in Ophiuroidea (Echinodermata). European Journal of Taxonomy 933: 1-98, DOI: 10.5852/ejt.2024.933.2525, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2525/11335
038987D9FF87D7790004C3A61BF9F832.taxon	discussion	Remarks Astrophiura has a unique and specialized morphology, possibly affected by paedomorphosis.	en	Stöhr, Sabine (2024): Taxonomic analysis of the genital plates and associated structures in Ophiuroidea (Echinodermata). European Journal of Taxonomy 933: 1-98, DOI: 10.5852/ejt.2024.933.2525, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2525/11335
038987D9FF84D77B006AC17C1B9FFB94.taxon	description	Fig. 7	en	Stöhr, Sabine (2024): Taxonomic analysis of the genital plates and associated structures in Ophiuroidea (Echinodermata). European Journal of Taxonomy 933: 1-98, DOI: 10.5852/ejt.2024.933.2525, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2525/11335
038987D9FF84D77B006AC17C1B9FFB94.taxon	type_taxon	Type species Asterias caputmedusae Linnaeus, 1758.	en	Stöhr, Sabine (2024): Taxonomic analysis of the genital plates and associated structures in Ophiuroidea (Echinodermata). European Journal of Taxonomy 933: 1-98, DOI: 10.5852/ejt.2024.933.2525, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2525/11335
038987D9FF84D77B006AC17C1B9FFB94.taxon	description	Oral GP Absent. 1 mm. Adradial GP Long with bulbous distal end, extending in an L-shape or as a rounded structure fused to abGP; parallel to arm vertebrae, as long as at least nine segments. Distal edge large and flat, no special articular structures, a depression in dorsal surface. Proximal part with deep median furrow, in cross section u-shaped. Fragmented into multiple, different sized pieces during bleaching. Abradial GP Small, attaching under proximal edge of bulbous L-shaped part on adradial GP or both fused to form a single structure. Oral shields Regular OS absent, but one or several madreporites, thickened, externally with numerous scattered small pores (transverse row of 7 – 8 pores in G. lamarcki (Müller & Troschel, 1842), inner side a meshwork of irregular lamellae and openings. Radial shield Long, bar-like with widened distal end, ventral side with flat, smooth articular patch at distalmost end, proximal to widened part a concave patch. Dorsal surface wider than ventral bar, creating thin lateral overhanging edges, with scaly appearance and numerous pores where disc granules were attached. Fragmented into several different sized pieces during bleaching.	en	Stöhr, Sabine (2024): Taxonomic analysis of the genital plates and associated structures in Ophiuroidea (Echinodermata). European Journal of Taxonomy 933: 1-98, DOI: 10.5852/ejt.2024.933.2525, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2525/11335
038987D9FF84D77B006AC17C1B9FFB94.taxon	discussion	Remarks Radial shields and genital plates broke easily during bleaching in Gorgonocephalus.	en	Stöhr, Sabine (2024): Taxonomic analysis of the genital plates and associated structures in Ophiuroidea (Echinodermata). European Journal of Taxonomy 933: 1-98, DOI: 10.5852/ejt.2024.933.2525, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2525/11335
038987D9FF85D774004DC4A51CCAFDAB.taxon	description	Fig. 8	en	Stöhr, Sabine (2024): Taxonomic analysis of the genital plates and associated structures in Ophiuroidea (Echinodermata). European Journal of Taxonomy 933: 1-98, DOI: 10.5852/ejt.2024.933.2525, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2525/11335
038987D9FF85D774004DC4A51CCAFDAB.taxon	type_taxon	Type species Asteronyx loveni Müller & Troschel, 1842.	en	Stöhr, Sabine (2024): Taxonomic analysis of the genital plates and associated structures in Ophiuroidea (Echinodermata). European Journal of Taxonomy 933: 1-98, DOI: 10.5852/ejt.2024.933.2525, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2525/11335
038987D9FF85D774004DC4A51CCAFDAB.taxon	description	Oral GP Absent. Adradial GP Half as long as in-disc part of arm. Flat, widest part half as wide as length, distally upwards curved, tapering to rounded proximal end. Terminating distally in a rounded condylar process with flat surface and at a small distance ventrally a half circle-shaped groove. Offset from fused abGP by longitudinal slits, not separating plates. Abradial GP Firmly fused to dorsal edge of adGP. Blade-like flat, longer than adGP, half as wide as adGP, abradial proximal half slightly depressed. Both GPs aligned along arm vertebrae with single flat surface. Oral shields Madreporite widely drop-shaped, externally with several small pores, inner side with deep middle depression, two irregular pores on either side. No regular oral shields. Radial shield Superficially appearing as long bar-like structures, consisting of a short distal part with widened end and for most of its length composed of multiple layers of thin, irregular, overlapping plates. Distal end with flat articular structure and a curved dorsal ledge. Proximally at a distance a round patch of finer mesh stereom. RS and adGP articulate by muscles and connective tissue, hard parts touching only at internal edge, evidenced by the wide gap between them in the relaxed disc.	en	Stöhr, Sabine (2024): Taxonomic analysis of the genital plates and associated structures in Ophiuroidea (Echinodermata). European Journal of Taxonomy 933: 1-98, DOI: 10.5852/ejt.2024.933.2525, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2525/11335
038987D9FF8BD7760037C1591BF1FD44.taxon	description	Fig. 9	en	Stöhr, Sabine (2024): Taxonomic analysis of the genital plates and associated structures in Ophiuroidea (Echinodermata). European Journal of Taxonomy 933: 1-98, DOI: 10.5852/ejt.2024.933.2525, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2525/11335
038987D9FF8BD7760037C1591BF1FD44.taxon	type_taxon	Type species Euryale aspera Lamarck, 1816.	en	Stöhr, Sabine (2024): Taxonomic analysis of the genital plates and associated structures in Ophiuroidea (Echinodermata). European Journal of Taxonomy 933: 1-98, DOI: 10.5852/ejt.2024.933.2525, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2525/11335
038987D9FF8BD7760037C1591BF1FD44.taxon	description	Oral GP Absent. Adradial GP Bar-like, distally thickened, curving upwards, flat articular structure and shallow groove. Abradial GP Isosceles triangular, thick, distal end straight, proximal end pointed, attaches along proximal dorsal edge of adGP. Oral shields All madreporic. At size 22 mm dd, minute, externally one or two pores visible. Internally, one madreporite elongated (slipper-shaped), proximally rounded and closed over, in middle a square opening, distal part narrower, tube-like closed, distal end open. Another madreporite internally not closed over, with deep openings and several septa. Only distal surface externally visible at vertical interradius, madreporite placed on inner side of two adradial shields, completely covered. Radial shield Bar-like, curved, distal end in dorsal aspect spatulate, widened, in ventral aspect rounded, gradually increasing in thickness from proximal to distal, articular structures as two flat patches, one on ventral side, one as distal surface. Proximal to articular structures a concave part with several holes.	en	Stöhr, Sabine (2024): Taxonomic analysis of the genital plates and associated structures in Ophiuroidea (Echinodermata). European Journal of Taxonomy 933: 1-98, DOI: 10.5852/ejt.2024.933.2525, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2525/11335
038987D9FF88D7760043C37B1A70F832.taxon	description	Fig. 10	en	Stöhr, Sabine (2024): Taxonomic analysis of the genital plates and associated structures in Ophiuroidea (Echinodermata). European Journal of Taxonomy 933: 1-98, DOI: 10.5852/ejt.2024.933.2525, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2525/11335
038987D9FF88D7760043C37B1A70F832.taxon	type_taxon	Type species Ophioscolex glacialis Müller & Troschel, 1842.	en	Stöhr, Sabine (2024): Taxonomic analysis of the genital plates and associated structures in Ophiuroidea (Echinodermata). European Journal of Taxonomy 933: 1-98, DOI: 10.5852/ejt.2024.933.2525, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2525/11335
038987D9FF88D7760043C37B1A70F832.taxon	description	Oral GP Oval, thin, scale-like, articular notch at inner proximal edge, sitting slanted at proximal end of genital slit, pair widely separated, partly overlapped by oral shield, attached to oral and adoral shield. Adradial GP Bar-like, distal end slightly swollen, minute in relation to disc size, restricted to disc edge, far from oral shield. Articular structures not well defined, two or three ribs separated by grooves, a single condyle, proximal to it a process where abGP attaches. Abradial GP Flat, thin, elongated blade, dorsal edge straight, ventral edge convex. Proximally tapered, distally straight slanting edge without specific articular structures. ¾ as long as adGP. Attaching to adGP at a short distance from distal end, laying parallel. Oral shields Wider than long, externally with horizontal fold, internally with proximal horizontal ridge, demarcating distal portion, where oral GPs attach to a pore at each side. Madreporite as wide as long, folded horizontally, inner side with weak central horizontal ridge, and irregular processes extending into hollow interior, opening widely to one side. Radial shield Considered absent, but unidentified short ossicle present distal to abGP, attached to it, in ventral position.	en	Stöhr, Sabine (2024): Taxonomic analysis of the genital plates and associated structures in Ophiuroidea (Echinodermata). European Journal of Taxonomy 933: 1-98, DOI: 10.5852/ejt.2024.933.2525, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2525/11335
038987D9FF89D7700016C57A1BB6FD3F.taxon	description	Fig. 11	en	Stöhr, Sabine (2024): Taxonomic analysis of the genital plates and associated structures in Ophiuroidea (Echinodermata). European Journal of Taxonomy 933: 1-98, DOI: 10.5852/ejt.2024.933.2525, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2525/11335
038987D9FF89D7700016C57A1BB6FD3F.taxon	type_taxon	Type species Ophioscolex dentatus Mortensen, 1933.	en	Stöhr, Sabine (2024): Taxonomic analysis of the genital plates and associated structures in Ophiuroidea (Echinodermata). European Journal of Taxonomy 933: 1-98, DOI: 10.5852/ejt.2024.933.2525, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2525/11335
038987D9FF89D7700016C57A1BB6FD3F.taxon	description	Oral GP Oval, twice as long as wide, flat, scale-like. Articulating with oral shield on latero-distal inner surface below horizontal ridge. Adradial GP Bar-like elongated, with middle kink, distal half thickened, wider than thinner proximal half. In middle an abradially protruding edge at which abGP attaches. Ventral edge thicker than dorsal edge. Distal end without specific articular structures. Abradial GP Half as long as adGP, blade-like flat, thin, ventral edge slightly convex, dorsal edge straight, distal edge slanting, without specific articular structure (flat stereom), proximal edge tapered. Oral shield Internally proximal half thickened, demarcated from distal half by horizontal ridge, distal half thinner. Madreporite (specimen of 11.9 mm dd) with constricted and flatter distal portion on inner side, separated from proximal half by horizontal ridge, one large hole in distal part, two large irregular openings in proximal part, hydropore in one distal lateral edge. Madreporite from smaller specimen (9 mm dd) similar, but with 2 smaller openings in proximal part. Radial shield Rectangular, three times as long as wide, no specific articular structures (flat stereom).	en	Stöhr, Sabine (2024): Taxonomic analysis of the genital plates and associated structures in Ophiuroidea (Echinodermata). European Journal of Taxonomy 933: 1-98, DOI: 10.5852/ejt.2024.933.2525, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2525/11335
038987D9FF8FD7720006C1591CE0FC2C.taxon	description	Fig. 12	en	Stöhr, Sabine (2024): Taxonomic analysis of the genital plates and associated structures in Ophiuroidea (Echinodermata). European Journal of Taxonomy 933: 1-98, DOI: 10.5852/ejt.2024.933.2525, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2525/11335
038987D9FF8FD7720006C1591CE0FC2C.taxon	type_taxon	Type species Ophiomyces frutectosus Lyman, 1869. Examined species Ophiomyces delata Koehler, 1904, O. frutectosus. Oral GP Not examined, not identified in situ. Considered absent. Adradial GP Flat, thin, blade-like, ventral edge convex, dorsal edge straight, articular structure at distal end as embossed oval patch with finer stereom. Abradial GP Similar to adGP, articular patch depressed. When both GP are articulated, they are parallel, leaving a narrow slit between them. Oral shields Minute, elongated drop-shaped, with thickened rectangular distal end, depressed center of OS with coarse, porous stereom in external and internal views. Madreporite similar, with several small pores in middle part. Radial shield Absent.	en	Stöhr, Sabine (2024): Taxonomic analysis of the genital plates and associated structures in Ophiuroidea (Echinodermata). European Journal of Taxonomy 933: 1-98, DOI: 10.5852/ejt.2024.933.2525, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2525/11335
038987D9FF8FD7720006C1591CE0FC2C.taxon	discussion	Remarks Matsumoto (1915, 1917) considered the abradial genital plate (his “ genital scale ”) and the radial shield in Ophiomyces to be absent (Table 1). Lyman (1882) considered the radial shield to be absent, but both genital plates to be present (Table 1), and the present study confirms his interpretation. They both described the adradial genital plate as curved over the top of the arm. Instead, both genital plates are flat and straight, and in the intact disc they may be upright or diagonal across the arm base (Fig. 12 E). Oral GPs were not found after dissociating the skeleton and may be absent, since the adGP and abGP extend the full length from oral shield to disc edge, with the genital slit opening between them. Conditions in Ophiotholia spathifer (Lyman, 1879) are the same as in Ophiomyces.	en	Stöhr, Sabine (2024): Taxonomic analysis of the genital plates and associated structures in Ophiuroidea (Echinodermata). European Journal of Taxonomy 933: 1-98, DOI: 10.5852/ejt.2024.933.2525, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2525/11335
038987D9FF8CD74C005CC4CE1C62FBAD.taxon	description	Fig. 13	en	Stöhr, Sabine (2024): Taxonomic analysis of the genital plates and associated structures in Ophiuroidea (Echinodermata). European Journal of Taxonomy 933: 1-98, DOI: 10.5852/ejt.2024.933.2525, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2525/11335
038987D9FF8CD74C005CC4CE1C62FBAD.taxon	type_taxon	Type species Asterias longicauda Bruzelius, 1805.	en	Stöhr, Sabine (2024): Taxonomic analysis of the genital plates and associated structures in Ophiuroidea (Echinodermata). European Journal of Taxonomy 933: 1-98, DOI: 10.5852/ejt.2024.933.2525, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2525/11335
038987D9FF8CD74C005CC4CE1C62FBAD.taxon	description	Oral GP Comma-shaped, ventrally flat, dorsal keel on distal part, three times as long as greatest width, half as long as proximal genital slit, curved along slit, with rounded proximal end and pointed distal end, longitudinal row of about six small pores. Pair distally at a wide angle from each other, proximally close but separated. Proximal part covered by oral shield. (Only examined in O. longicaudum). Adradial GP Rod with bulbous distal end, flatter proximal to bulbous part, tapering proximalwards, ventral edge convex, dorsal edge straight. Bulbous end composed of a domed condyle and a flat condylar process, adradial one surrounded by a circular groove. In situ, this groove and a corresponding groove and condyle on adradial inner surface of radial shield connected by muscle fibres. A large hole near base of adradial condyle. Abradial GP Trapezoid, with straight distal and dorsal edges, ventral and proximal edges angling upwards. Adradial surface with conspicuous pore in distal part, abradial surface with shallow longitudinal groove. Articulating with adradial GP on its abradial side, at proximal border of abradial condyle. Oral shields Rounded triangular, with groove in distal edge. Inner surface with scattered small pores, lateral edges in distal half depressed, distal part raised as a ridge with straight-edged wide median process. Madreporite inner surface with rough stereom on raised middle part, denser stereom on flat outer edge and with 2 – 3 low spurs, distally a thickened spur to either side of a large hole that opens to one side in a smaller hole (hydropore), bordered distally by rectangular process. Externally madreporite with deep, round depression in distal half, groove in distal process, hydropore in one side. Radial shield With two large, low condyles of denser stereom occupying most of inner distal surface of shield, proximal to and between them a large opening and proximal to that a round, slightly depressed patch of smaller pore stereom. Adradial condyle bordered by a groove.	en	Stöhr, Sabine (2024): Taxonomic analysis of the genital plates and associated structures in Ophiuroidea (Echinodermata). European Journal of Taxonomy 933: 1-98, DOI: 10.5852/ejt.2024.933.2525, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2525/11335
038987D9FF8CD74C005CC4CE1C62FBAD.taxon	discussion	Remarks Matsumoto (1917) stated: “ In Ophioderma, the genital plate and scales of the same side of a radius are soldered together at the middle, so that the genital slit is divided into two secondary pores, an inner and an outer. ” (Table 1). He probably referred to the disc scales, not the “ genital scale ” (= abradial GP), because there is only a single short “ genital scale ” at either side of an arm. It is unclear what he meant by “ soldering ”, but GPs and disc scales fall apart in bleach, suggesting no hard parts are fused, and in the 3 D reconstructions, there is a gap between vertebrae and adGP. The body wall forms a wide bridge across the genital slit, dividing it into a proximal and a distal opening. The abradial GP is less than half as long as the adradial GP and supports only the distal genital opening; the proximal one is supported abradially by the oral GP. The three species closely related to O. longicaudum for which ossicle data are available are all highly similar in the examined structures.	en	Stöhr, Sabine (2024): Taxonomic analysis of the genital plates and associated structures in Ophiuroidea (Echinodermata). European Journal of Taxonomy 933: 1-98, DOI: 10.5852/ejt.2024.933.2525, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2525/11335
038987D9FFB2D74E0046C4F31C19FCDE.taxon	description	Fig. 14 A – Q	en	Stöhr, Sabine (2024): Taxonomic analysis of the genital plates and associated structures in Ophiuroidea (Echinodermata). European Journal of Taxonomy 933: 1-98, DOI: 10.5852/ejt.2024.933.2525, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2525/11335
038987D9FFB2D74E0046C4F31C19FCDE.taxon	type_taxon	Type species Ophiura pentagona Lamarck, 1816.	en	Stöhr, Sabine (2024): Taxonomic analysis of the genital plates and associated structures in Ophiuroidea (Echinodermata). European Journal of Taxonomy 933: 1-98, DOI: 10.5852/ejt.2024.933.2525, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2525/11335
038987D9FFB2D74E0046C4F31C19FCDE.taxon	description	Oral GP Elongated, three and a half times as long as greatest width, bar-like, flat, proximal end thickened, straight edge. Adradial GP Bar-like, proximal half flat, distal half thicker, end round, curving dorsalwards to meet RS, distal edge flat. In middle of ventral edge, a short process, to which abGP attaches. Abradial GP About half as long as adGP, flat, thin blade, straight, distal end slightly thicker, dorsalwards curved, edge slanting, proximal end rounded. Adradial surface in distal part with one to several conspicuous pores. Oral shields Rounded triangular, distal edge convex and thicker than thin main part. Madreporite distally inflated, inner side with large distal opening, a spur to either side, smaller hole in one laterodistal edge. Radial shield Rectangular to bar-like, distal end wider than proximal end, on distal inner side a patch of denser stereom as articular structure, no condyle.	en	Stöhr, Sabine (2024): Taxonomic analysis of the genital plates and associated structures in Ophiuroidea (Echinodermata). European Journal of Taxonomy 933: 1-98, DOI: 10.5852/ejt.2024.933.2525, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2525/11335
038987D9FFB2D74E0046C4F31C19FCDE.taxon	discussion	Remarks The abGP of Ophiarachna incrassata (Lamarck, 1816) (Fig. 14 S) somewhat resembles the hockey-stick shape of the abGP of Ophiochiton (Fig. 24 C) or a longer version of the abGP of Ophioderma (Fig. 13 F). Its adGP (Fig. 14 R) has a condyle and a condylar process (or two condyles), unlike that of Ophiomyxa, but resembling that of Ophioderma (Fig. 13 E, G – H). No material was available to examine other angles of O. incrassata (nor any other congeneric species).	en	Stöhr, Sabine (2024): Taxonomic analysis of the genital plates and associated structures in Ophiuroidea (Echinodermata). European Journal of Taxonomy 933: 1-98, DOI: 10.5852/ejt.2024.933.2525, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2525/11335
038987D9FFB0D7480017C3B51B64FD4F.taxon	description	Fig. 15	en	Stöhr, Sabine (2024): Taxonomic analysis of the genital plates and associated structures in Ophiuroidea (Echinodermata). European Journal of Taxonomy 933: 1-98, DOI: 10.5852/ejt.2024.933.2525, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2525/11335
038987D9FFB0D7480017C3B51B64FD4F.taxon	type_taxon	Type species Ophiura echinata Lamarck, 1816.	en	Stöhr, Sabine (2024): Taxonomic analysis of the genital plates and associated structures in Ophiuroidea (Echinodermata). European Journal of Taxonomy 933: 1-98, DOI: 10.5852/ejt.2024.933.2525, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2525/11335
038987D9FFB0D7480017C3B51B64FD4F.taxon	description	Oral GP Flat, open right angle (short L-shaped), one end slightly convex attaching to distal edge of OS, the other concave and attaching to inside of OS, rounded angle outwards. (Only examined in O. scolopendrina.) Adradial GP Bar-like long, flat for most of its length, with longitudinal ridge on adradial surface, distal end somewhat thicker, articular structures consist of a lateral bar to which abGP attaches, one large condyle, bordered by a spiral-shaped groove and high stereom edge. A large hole at base of condyle, a bulbous process proximal to condyle on dorsal edge. Abradial GP Strongly curved, boomerang-shaped, flat, dorsal edge thickened into ridge abradially, distal end widened, concave with oval depression, articulating just proximal to distal end of adGP. Abradial surface with one to several conspicuous pores near distal edge. Longitudinal groove in abradial surface. Oral shields Inner side with two small flat middle spurs, two larger flat laterodistal spurs, and a round centrodistal depression to which oral GPs attach. Madreporite inner side with large round central hole, smaller round distal hole, offset to one side a large oval hydropore, visible externally. Radial shield Single low condyle bordered by a short dorso-distal groove.	en	Stöhr, Sabine (2024): Taxonomic analysis of the genital plates and associated structures in Ophiuroidea (Echinodermata). European Journal of Taxonomy 933: 1-98, DOI: 10.5852/ejt.2024.933.2525, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2525/11335
038987D9FFB0D7480017C3B51B64FD4F.taxon	discussion	Remarks All examined species in the closely related genera Ophiocoma and Breviturma Stöhr, Boissin & Hoareau, 2013 are similar in the observed characteristics, but some variation exists. The radial shields have a thicker condyle and an obvious patch of finer stereom proximal to it in O. erinaceus, O. schoenleini and B. krohi. These are less well expressed and more similar to those of O. scolopendrina in B. doederleini and B. dentata. The oral shield has three lateral spurs in O. erinaceus, and all are more embossed than in O. scolopendrina (not examined in other species). The articular structures on the adGP are more strongly expressed in O. erinaceus and the Breviturma species than in O. scolopendrina.	en	Stöhr, Sabine (2024): Taxonomic analysis of the genital plates and associated structures in Ophiuroidea (Echinodermata). European Journal of Taxonomy 933: 1-98, DOI: 10.5852/ejt.2024.933.2525, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2525/11335
038987D9FFB6D74A005FC3251C76FD54.taxon	description	Fig. 16	en	Stöhr, Sabine (2024): Taxonomic analysis of the genital plates and associated structures in Ophiuroidea (Echinodermata). European Journal of Taxonomy 933: 1-98, DOI: 10.5852/ejt.2024.933.2525, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2525/11335
038987D9FFB6D74A005FC3251C76FD54.taxon	type_taxon	Type species Asterias bidentata Bruzelius, 1805.	en	Stöhr, Sabine (2024): Taxonomic analysis of the genital plates and associated structures in Ophiuroidea (Echinodermata). European Journal of Taxonomy 933: 1-98, DOI: 10.5852/ejt.2024.933.2525, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2525/11335
038987D9FFB6D74A005FC3251C76FD54.taxon	description	Oral GP Pair close together, overlapping ventral disc scales. Rounded triangular or rectangular with median fold. Attached to distal point of oral shield with thickened edge. Large pore in inner side. Adradial GP Bar-like, with slightly widened distal end, articular structures as single dorso-distal condyle, bordered by curved groove with low protruding ventral stereom edge. Abradially a process and patches of denser stereom, where abGP attaches. Dorsal part of condyle meets flat surface of underside of RS. Abradial GP Thin, flat, curved scale, abradial edge strongly convex, adradial edge concave, with tapered, rounded proximal end, wider, slanting straight distal edge with flat or slightly domed articular surface. Adradial surface in distal part with conspicuous pore. Oral shields Hexagonal, wing-like, twice as wide as long, inner surface domed in centre, distal third of inner side thickened. Madreporite larger, wing-like with rounded lateral edges, strongly convex distal lobe, inner side flat on ‘ wings’, thickened in centre and on lobe, which has a large hole, opening into a smaller hole (hydropore) in one latero-distal edge. Radial shield Narrow bar-like, distal end fan-shaped widened, small pore in distal part, straight distal edge, no specific articular structure.	en	Stöhr, Sabine (2024): Taxonomic analysis of the genital plates and associated structures in Ophiuroidea (Echinodermata). European Journal of Taxonomy 933: 1-98, DOI: 10.5852/ejt.2024.933.2525, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2525/11335
038987D9FFB6D74A005FC3251C76FD54.taxon	discussion	Remarks Two specimens of O. bidentata from Svalbard were analysed; the smaller one (11.5 mm dd) was dissected for this project and had narrower abGPs, a shorter but wider madreporite and slightly different adGPs (Fig. 16 A – L) than the larger one (13 mm dd, Fig. 16 M – O), of which images existed prior to this project. It is unclear whether these differences are due to the small size difference or whether this is variation between individuals in this morphologically variable species (evidenced by the fact that it has been synonymized with five other nominal species (Stöhr et al. 2022 )). Since there is no geographic difference between these two specimens, it seems unlikely that these differences indicate different species. There is also some variation within the genus Ophiacantha. A specimen of O. abyssicola of similar size (13 mm dd) had narrower adGPs, smaller, less curved, more tapered abGPs, RSs with a triangular distal end with embossed part, and a madreporite with a large central hole.	en	Stöhr, Sabine (2024): Taxonomic analysis of the genital plates and associated structures in Ophiuroidea (Echinodermata). European Journal of Taxonomy 933: 1-98, DOI: 10.5852/ejt.2024.933.2525, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2525/11335
038987D9FFB4D74A0001C2E51DA0F817.taxon	description	Fig. 17	en	Stöhr, Sabine (2024): Taxonomic analysis of the genital plates and associated structures in Ophiuroidea (Echinodermata). European Journal of Taxonomy 933: 1-98, DOI: 10.5852/ejt.2024.933.2525, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2525/11335
038987D9FFB4D74A0001C2E51DA0F817.taxon	type_taxon	Type species Ophiocamax vitrea Lyman, 1878.	en	Stöhr, Sabine (2024): Taxonomic analysis of the genital plates and associated structures in Ophiuroidea (Echinodermata). European Journal of Taxonomy 933: 1-98, DOI: 10.5852/ejt.2024.933.2525, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2525/11335
038987D9FFB4D74A0001C2E51DA0F817.taxon	description	Oral GP Rounded comma-shaped, externally convex, with many thorns, placed at either side of distal lobe of madreporite. Adradial GP Bar-like, straight, distally thickened, proximally tapered to a point. Articular structure with one condyle, bordered by half-circular shallow groove. Proximal to condyle a depression and a pore. Abradial GP Flat, strong, curved blade-like, as long as adGP, but wider, distal end curved towards adGP, convex abradial edge thicker, proximal end thinner. Articular structure a concave depression with thickened rim. Distal half of ventral edge with pointed thorns. Oral shields Proximally wing-like triangular, large distal lobe, creating a spearhead shape, folded along horizontal midline. Madreporite with large hole in midline of inner side. Radial shield Large condyle on distal radial corner, bordered by dorso-distal groove.	en	Stöhr, Sabine (2024): Taxonomic analysis of the genital plates and associated structures in Ophiuroidea (Echinodermata). European Journal of Taxonomy 933: 1-98, DOI: 10.5852/ejt.2024.933.2525, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2525/11335
038987D9FFB4D74A0001C2E51DA0F817.taxon	discussion	Remarks Ophiocamax vitrea is the only species among the here examined Ophiacanthida in which the hole in the madreporite is not near the distal edge. It is unknown whether this is true for other species of Ophiocamax. The strong fold in the middle of the madreporite may have led to the displacement of the hole, but more species need to be studied.	en	Stöhr, Sabine (2024): Taxonomic analysis of the genital plates and associated structures in Ophiuroidea (Echinodermata). European Journal of Taxonomy 933: 1-98, DOI: 10.5852/ejt.2024.933.2525, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2525/11335
038987D9FFB5D74503A6C5DD1D4EFC62.taxon	description	Fig. 18	en	Stöhr, Sabine (2024): Taxonomic analysis of the genital plates and associated structures in Ophiuroidea (Echinodermata). European Journal of Taxonomy 933: 1-98, DOI: 10.5852/ejt.2024.933.2525, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2525/11335
038987D9FFB5D74503A6C5DD1D4EFC62.taxon	type_taxon	Type species Asterias nigra Abildgaard in O. F. Müller, 1789.	en	Stöhr, Sabine (2024): Taxonomic analysis of the genital plates and associated structures in Ophiuroidea (Echinodermata). European Journal of Taxonomy 933: 1-98, DOI: 10.5852/ejt.2024.933.2525, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2525/11335
038987D9FFB5D74503A6C5DD1D4EFC62.taxon	description	Oral GP Rounded rectangular with finger-like proximal lobe, thin. Articulates with oral shield with lobe at distolateral spurs, pair of oGP close together. Adradial GP Bar-like, distal end widened, curved dorsalwards, articular structures two-pronged condylar processes, adradial one with round dorso-distal condyle bordered by ventral groove, abradial one articulates with abGP. Abradial GP Flat scoop-shaped, thin, proximally tapered, ventral edge convex, dorso-proximal half straight, dorso-distal half with concave articular structure. Adradial surface with distal pore. Oral shield Inner side flat, two lateral spurs at distal edge. Madreporite inner surface with raised middle part, large distal hole, opening to one side in a smaller hole (hydropore). Flat lateral inner portions with small pores. Radial shield Distal edge with one large and one smaller condyle, larger one bordered by dorsal ledge. Proximal to two condyles a conspicuous hole.	en	Stöhr, Sabine (2024): Taxonomic analysis of the genital plates and associated structures in Ophiuroidea (Echinodermata). European Journal of Taxonomy 933: 1-98, DOI: 10.5852/ejt.2024.933.2525, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2525/11335
038987D9FFBBD745000EC3EE1A4DF832.taxon	description	Fig. 19 A – E	en	Stöhr, Sabine (2024): Taxonomic analysis of the genital plates and associated structures in Ophiuroidea (Echinodermata). European Journal of Taxonomy 933: 1-98, DOI: 10.5852/ejt.2024.933.2525, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2525/11335
038987D9FFBBD745000EC3EE1A4DF832.taxon	type_taxon	Type species Ophiocopa spatula Lyman, 1883.	en	Stöhr, Sabine (2024): Taxonomic analysis of the genital plates and associated structures in Ophiuroidea (Echinodermata). European Journal of Taxonomy 933: 1-98, DOI: 10.5852/ejt.2024.933.2525, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2525/11335
038987D9FFBBD745000EC3EE1A4DF832.taxon	description	Oral GP Not examined in detail, but in situ appears like large round scale, pair widely separated at the oral shield. Adradial GP Bar-like, with thin rod and widened distal end with lateral processes and finer meshed patch, single condyle and groove. Abradial GP Thin, curved scale, abradially convex, straight articular distal edge. As long as adGP. Conspicuous pores in distal part of adradial surface. Oral shields Madreporite inner side with median transverse ridge / two spurs, split in two halves by central opening. Radial shield Articular structure a smooth patch, slightly depressed. In centre of distal half, a finer meshed patch.	en	Stöhr, Sabine (2024): Taxonomic analysis of the genital plates and associated structures in Ophiuroidea (Echinodermata). European Journal of Taxonomy 933: 1-98, DOI: 10.5852/ejt.2024.933.2525, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2525/11335
038987D9FFB8D7470031C11B1FFCFE3E.taxon	description	Fig. 19 F – I	en	Stöhr, Sabine (2024): Taxonomic analysis of the genital plates and associated structures in Ophiuroidea (Echinodermata). European Journal of Taxonomy 933: 1-98, DOI: 10.5852/ejt.2024.933.2525, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2525/11335
038987D9FFB8D7470031C11B1FFCFE3E.taxon	type_taxon	Type species Ophiacanha lineolata Lyman, 1883.	en	Stöhr, Sabine (2024): Taxonomic analysis of the genital plates and associated structures in Ophiuroidea (Echinodermata). European Journal of Taxonomy 933: 1-98, DOI: 10.5852/ejt.2024.933.2525, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2525/11335
038987D9FFB8D7470031C11B1FFCFE3E.taxon	description	Oral GP Not examined, but considered present. Adradial GP Bar-like, thicker rod with slightly wider distal end with lateral processes, single condyle and groove. Abradial GP Thick curved scale, half as long as adGP, straight distal articular edge of abradial surface with conspicuous pore. Oral shields Not examined. Radial shield Inner side with distal condyle and curved groove, proximal to this a depression with protruding proximal edge.	en	Stöhr, Sabine (2024): Taxonomic analysis of the genital plates and associated structures in Ophiuroidea (Echinodermata). European Journal of Taxonomy 933: 1-98, DOI: 10.5852/ejt.2024.933.2525, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2525/11335
038987D9FFB9D7400066C2DF1DE9FADF.taxon	description	Fig. 20	en	Stöhr, Sabine (2024): Taxonomic analysis of the genital plates and associated structures in Ophiuroidea (Echinodermata). European Journal of Taxonomy 933: 1-98, DOI: 10.5852/ejt.2024.933.2525, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2525/11335
038987D9FFB9D7400066C2DF1DE9FADF.taxon	type_taxon	Type species Ophiozona longispina H. L. Clark, 1908.	en	Stöhr, Sabine (2024): Taxonomic analysis of the genital plates and associated structures in Ophiuroidea (Echinodermata). European Journal of Taxonomy 933: 1-98, DOI: 10.5852/ejt.2024.933.2525, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2525/11335
038987D9FFB9D7400066C2DF1DE9FADF.taxon	description	Oral GP Not examined in detail. Genital slit lined by narrow elongated plates connecting to OS laterodistally, pair widely separated, similar to condition in Ophiolepis. Adradial GP Comma-shaped, distally wide and thick, proximally tapered to a point, ventral edge convex, dorsal edge concave and with a rough protrusion. Articular structures a distal depression, a condylar process with flat distal surface, bordered by a groove, proximally to this a large round to heart-shaped patch of finer stereom. Abradial GP As long as adGP, scoop-shaped with smooth, concave dorso-distal articular structure, accounting for a third to half plate length. Oral shields Inner side flat, no remarkable structures. Madreporite inner side with thickened proximal part with large central hole, opening into two proximal small pores. Radial shield Articular structures consist of a distal condyle and depression on an embossed part, at distal edge bordered by a narrow ledge. Proximal to depression a round coarse patch.	en	Stöhr, Sabine (2024): Taxonomic analysis of the genital plates and associated structures in Ophiuroidea (Echinodermata). European Journal of Taxonomy 933: 1-98, DOI: 10.5852/ejt.2024.933.2525, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2525/11335
038987D9FFB9D7400066C2DF1DE9FADF.taxon	discussion	Remarks The type species of Hemieuryalidae, Hemieuryale pustulata von Martens, 1867, has a short abradial GP with a wider distal half and proximal thinner stalk (Gondim et al. 2015), more or less comma-shaped. The articular structures consist of a shallow stereom depression and a curved distal groove, matching similar structures on the radial shield; the abradial GP was not found and may be absent (Gondim et al. 2015). The radial shield has similar articular structures as in O. longispina. Oral GPs were not known when that study was performed, but oral images of H. pustulata in Gondim et al. (2015) show that the short proximally positioned genital opening is abradially lined by a large flat scale that connects to the oral shield and this is likely an oral GP. In Sigsbeia murrhina Lyman, 1878 and S. lineata Lütken & Mortensen, 1899, the genital slits are limited to small round openings near the oral shield (Gondim de Farias 2016) and oral GP are considered absent.	en	Stöhr, Sabine (2024): Taxonomic analysis of the genital plates and associated structures in Ophiuroidea (Echinodermata). European Journal of Taxonomy 933: 1-98, DOI: 10.5852/ejt.2024.933.2525, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2525/11335
038987D9FFBED7420049C57E1C07FD27.taxon	description	Fig. 21 A – L	en	Stöhr, Sabine (2024): Taxonomic analysis of the genital plates and associated structures in Ophiuroidea (Echinodermata). European Journal of Taxonomy 933: 1-98, DOI: 10.5852/ejt.2024.933.2525, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2525/11335
038987D9FFBED7420049C57E1C07FD27.taxon	type_taxon	Type species Ophiolepis superba H. L. Clark, 1915.	en	Stöhr, Sabine (2024): Taxonomic analysis of the genital plates and associated structures in Ophiuroidea (Echinodermata). European Journal of Taxonomy 933: 1-98, DOI: 10.5852/ejt.2024.933.2525, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2525/11335
038987D9FFBED7420049C57E1C07FD27.taxon	description	Oral GP In situ visible as narrow elongated plates latero-distally at OS. Positioned slanted vertically at distal lateral edge of OS. Elongated oval in shape with raised central ridge and slanting sides; ventral edge convex and thickened, dorsal edge straight. Small pore in distal edge. Adradial GP Cleaver-shaped, proximal half a thick rod, distal half dorso-adradially with wide blade-like protrusion, single condyle, bordered by deep groove in distal adradial edge. Proximal to condyle a large depression with protruding rim. Abradial GP Longer and wider than adGP, rounded scalene triangular, dorsal edge strongly convex and wavy, ventral edge straight, distal end rounded, proximal end tapered to round point, ventral edge thickened into ridge, distally widened. One to two conspicuous pores in distal edge. Attaches broadly to blade-like protrusion on adGP. Oral shields Elongated oval with proximal pointed angle, inner side embossed with thin rim. Madreporite similar, with large hole proximo-central in inner side, divided by narrow bridge. Radial shield Inner side of distal part embossed with two poorly defined condyles, bordered by short ledge, proximal to embossed part a patch of coarser stereom with finer centre.	en	Stöhr, Sabine (2024): Taxonomic analysis of the genital plates and associated structures in Ophiuroidea (Echinodermata). European Journal of Taxonomy 933: 1-98, DOI: 10.5852/ejt.2024.933.2525, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2525/11335
038987D9FFBED7420049C57E1C07FD27.taxon	discussion	Remarks The protrusion that gives the adGP its cleaver-like shape is present in all species of Ophiolepis that have been examined so far, albeit sometimes less pronounced or shorter than in O. variegata, and the abGP also has a similar shape in all species (Pineda-Enriquez 2013). The two condyles on the inner RS are more obvious in O. superba than in O. variegata.	en	Stöhr, Sabine (2024): Taxonomic analysis of the genital plates and associated structures in Ophiuroidea (Echinodermata). European Journal of Taxonomy 933: 1-98, DOI: 10.5852/ejt.2024.933.2525, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2525/11335
038987D9FFBCD7420008C32C1B8FF832.taxon	description	Fig. 21 M – P	en	Stöhr, Sabine (2024): Taxonomic analysis of the genital plates and associated structures in Ophiuroidea (Echinodermata). European Journal of Taxonomy 933: 1-98, DOI: 10.5852/ejt.2024.933.2525, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2525/11335
038987D9FFBCD7420008C32C1B8FF832.taxon	type_taxon	Type species Ophiotypa simplex Koehler, 1897.	en	Stöhr, Sabine (2024): Taxonomic analysis of the genital plates and associated structures in Ophiuroidea (Echinodermata). European Journal of Taxonomy 933: 1-98, DOI: 10.5852/ejt.2024.933.2525, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2525/11335
038987D9FFBCD7420008C32C1B8FF832.taxon	description	Oral GP Absent. Adradial GP Cup-shaped convex, smaller than lateral arm plate to which it attaches. Articular structure a flat distal surface. Abradial GP Absent. Oral shields Not examined. Radial shield Single large plate above each arm base with two flat articular structures separated by a depression.	en	Stöhr, Sabine (2024): Taxonomic analysis of the genital plates and associated structures in Ophiuroidea (Echinodermata). European Journal of Taxonomy 933: 1-98, DOI: 10.5852/ejt.2024.933.2525, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2525/11335
038987D9FFBCD7420008C32C1B8FF832.taxon	discussion	Remarks Ophiotypa simplex is the only species in its genus and strongly paedomorphic. Its disc consists of few large plates. Pairs of radial shields appear to have been fused into a single large plate or are replaced by the radial primary plates functioning as radial shields, but individuals with a pair of plates on one or several radii have been observed (unpublished data, Stöhr & Martynov). The ventral disc is covered by the large oral shield, genital slits are not visible and the abGP appears to be absent.	en	Stöhr, Sabine (2024): Taxonomic analysis of the genital plates and associated structures in Ophiuroidea (Echinodermata). European Journal of Taxonomy 933: 1-98, DOI: 10.5852/ejt.2024.933.2525, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2525/11335
038987D9FFBDD7430004C17C1DB5F8CD.taxon	description	Fig. 22	en	Stöhr, Sabine (2024): Taxonomic analysis of the genital plates and associated structures in Ophiuroidea (Echinodermata). European Journal of Taxonomy 933: 1-98, DOI: 10.5852/ejt.2024.933.2525, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2525/11335
038987D9FFBDD7430004C17C1DB5F8CD.taxon	type_taxon	Type species Ophiocnida olivacea Lyman, 1869.	en	Stöhr, Sabine (2024): Taxonomic analysis of the genital plates and associated structures in Ophiuroidea (Echinodermata). European Journal of Taxonomy 933: 1-98, DOI: 10.5852/ejt.2024.933.2525, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2525/11335
038987D9FFBDD7430004C17C1DB5F8CD.taxon	description	Oral GP Large, rectangular, flat, thin, with round, elongated proximal lobe. Almost vertical along proximal abradial bursa edge. Adradial GP Bar-like with widened distal end. Articular structures a low condyle, bordered by shallow groove and low edge. Proximal to condyle a rounded abradial process to which the abGP articulates ventrally, a round depression of coarse stereom and a small pore. Proximal part twisted. Abradial GP Twisted s-shape, thin, with distal adradial appendix, one third as long as plate, folded proximalwards and fold articulates with adGP, folding around flat extensions of lateral arm plates. Distal edge straight. Large adradial plates (flat and interlocked arm spines) bordering genital slit fold over abGP and under appendix, similar enlarged disc scales fold over the slit edge abradially, on their inner side supported by the abGP. Oral shields Flat, on distal part a spur on each side, offsetting distal lobe from proximal part. Madreporite slightly inflated in centre, with large opening between distal lateral spurs, proximal to large hole stereom wider meshed with pores. Externally a single hydropore at distal edge, offset from centre. Radial shield Inner side with distal flat condyle, bordered by curved groove. Distal to RS midline a rough round patch.	en	Stöhr, Sabine (2024): Taxonomic analysis of the genital plates and associated structures in Ophiuroidea (Echinodermata). European Journal of Taxonomy 933: 1-98, DOI: 10.5852/ejt.2024.933.2525, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2525/11335
038987D9FFBDD7430004C17C1DB5F8CD.taxon	discussion	Remarks The shape of the abradial GP sets Amphilimna olivacea apart from all other here examined species. The peculiar shape matches the specialized lateral arm plates, which are blade-like flat and form the adradial border of the s-shaped genital slit. The genital plates of A. multispina Koehler, 1922 are similar to those of A. olivacea (Martynov 2010), but their shape is unknown for other species in the genus. Contrary to the original description of A. olivacea, no genital plate is exposed to the outside (Lyman 1869), as is evident from the micro-CT reconstruction.	en	Stöhr, Sabine (2024): Taxonomic analysis of the genital plates and associated structures in Ophiuroidea (Echinodermata). European Journal of Taxonomy 933: 1-98, DOI: 10.5852/ejt.2024.933.2525, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2525/11335
038987D9FFA3D75D0006C1591CDAF97D.taxon	description	Fig. 23	en	Stöhr, Sabine (2024): Taxonomic analysis of the genital plates and associated structures in Ophiuroidea (Echinodermata). European Journal of Taxonomy 933: 1-98, DOI: 10.5852/ejt.2024.933.2525, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2525/11335
038987D9FFA3D75D0006C1591CDAF97D.taxon	type_taxon	Type species Ophiura reticulata Say, 1825.	en	Stöhr, Sabine (2024): Taxonomic analysis of the genital plates and associated structures in Ophiuroidea (Echinodermata). European Journal of Taxonomy 933: 1-98, DOI: 10.5852/ejt.2024.933.2525, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2525/11335
038987D9FFA3D75D0006C1591CDAF97D.taxon	description	Oral GP Elongated oval, flat, thin, proximal end under OS, pair not meeting (only examined in O. reticulata, but externally visible in O. degeneri and O. porrecta). On some plates a round lateral process. Beset with small round granules / papillae at abradial edge. Large scales along the genital slit connect to oGP. Adradial GP Ophionereis reticulata: weakly cleaver-shaped with wavy abradial edge. Proximal half rod-like with longitudinal groove, distal half widened rectangular, protruding abradial edge wavy, articulates with ventral surface to abGP. Abradial surface with small adradial process with coarser stereom, oval hole in distal part. Distal end curved dorsalwards, dorsally rounded, no distinct condyle, but a groove, distal edge concave. Proximal ends of adGP and abGP crossing. Ophionereis porrecta: widened projection smaller, cleaver shape less obvious; distally a condylar process terminating flat. Ophionereis degeneri: cleaver shape slightly more pronounced than in O. porrecta, but not as strong as in O. reticulata; distal condylar process and groove. Abradial GP Ophionereis reticulata: sabre-shaped, as long as adGP, sligthly curved, dorsal edge concave, ventral edge convex, with furrow in abradial side, distal third dorsally flattened concave, articulates to adGP, proximal end crosses adGP. Ophionereis porrecta: thin, flat, curved, distally widest with slanting edge, proximally tapered to round point. Ophionereis degeneri: similar to O. porrecta, but articular edge concave. Oral shields On inner surface, near distal edge a spur to either side. Madreporite in distal half inflated, with large opening, proximal half thinner (only examined in O. reticulata). Radial shield Single condyle and coarser round patch at some distance proximal to condyle in all three examined species, condyle more pronounced in O. degeneri than in the others.	en	Stöhr, Sabine (2024): Taxonomic analysis of the genital plates and associated structures in Ophiuroidea (Echinodermata). European Journal of Taxonomy 933: 1-98, DOI: 10.5852/ejt.2024.933.2525, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2525/11335
038987D9FFA1D75F0007C11B1E7FFA30.taxon	description	Fig. 24 A – C	en	Stöhr, Sabine (2024): Taxonomic analysis of the genital plates and associated structures in Ophiuroidea (Echinodermata). European Journal of Taxonomy 933: 1-98, DOI: 10.5852/ejt.2024.933.2525, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2525/11335
038987D9FFA1D75F0007C11B1E7FFA30.taxon	type_taxon	Type species Ophiochiton fastigatus Lyman, 1878.	en	Stöhr, Sabine (2024): Taxonomic analysis of the genital plates and associated structures in Ophiuroidea (Echinodermata). European Journal of Taxonomy 933: 1-98, DOI: 10.5852/ejt.2024.933.2525, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2525/11335
038987D9FFA1D75F0007C11B1E7FFA30.taxon	description	Oral GP Externally visible as large, round scales, but not examined. Adradial GP Weakly cleaver-shaped, flat, blade-like proximal part, distal end depressed with high edges, a large rough patch on adradial surface towards dorsal edge, and a large hole in middle of distal part on adradial surface. Abradial GP Hockey-stick-shaped, blade-like, flat, as long as adGP, distal end angled, pointed, distal dorso-adradial edge with depression. Lines abradial edge of genital slit (= part of edge of interradial disc). Oral shields Not examined. Radial shield Not examined.	en	Stöhr, Sabine (2024): Taxonomic analysis of the genital plates and associated structures in Ophiuroidea (Echinodermata). European Journal of Taxonomy 933: 1-98, DOI: 10.5852/ejt.2024.933.2525, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2525/11335
038987D9FFA1D75F0007C11B1E7FFA30.taxon	discussion	Remarks The available pre-existing images allow only limited assessment of the articular structures of the adradial GP. Martynov (2010) described them as a condyle bordered by a low ridge but without figures, whereas Matsumoto (1917) wrote that the radial shield and adradial GP articulate with two condyles and one pit. The images presented here appear to be the first published SEM images of genital plates of Ophiochiton.	en	Stöhr, Sabine (2024): Taxonomic analysis of the genital plates and associated structures in Ophiuroidea (Echinodermata). European Journal of Taxonomy 933: 1-98, DOI: 10.5852/ejt.2024.933.2525, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2525/11335
038987D9FFA1D7590033C63B1D06FDD2.taxon	description	Fig. 24 D – J	en	Stöhr, Sabine (2024): Taxonomic analysis of the genital plates and associated structures in Ophiuroidea (Echinodermata). European Journal of Taxonomy 933: 1-98, DOI: 10.5852/ejt.2024.933.2525, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2525/11335
038987D9FFA1D7590033C63B1D06FDD2.taxon	type_taxon	Type species Ophioplax ljungmani Lyman, 1875.	en	Stöhr, Sabine (2024): Taxonomic analysis of the genital plates and associated structures in Ophiuroidea (Echinodermata). European Journal of Taxonomy 933: 1-98, DOI: 10.5852/ejt.2024.933.2525, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2525/11335
038987D9FFA1D7590033C63B1D06FDD2.taxon	description	Oral GP Not examined, in situ obscured by granules, but laterally at oral shield a large scale discernible at either side, considered as oral GP. Adradial GP Proximal half bar-like, distally weakly cleaver-shaped with wide dorsal and ventral processes; rounded distal part offset from proximal bar by a kink. Articular structure a prominent round distal condyle, bordered by a deep groove and wide edge. Proximal to condyle on dorsal side of offset part a large patch of finer meshed stereom. Abradial GP Sabre-shaped, flat, thin, ventral edge convex, dorsal edge slightly concave, long concave distal articular structure. Oral shields Flat, on distal part a weak spur on each side, offsetting distal lobe from proximal part. Madreporite inner side inflated in middle, two lateral distal spurs, flat proximal margins, large opening in distal lobe. Radial shield Low distal condyle near adradial edge, distally bordered by short groove. Proximal to condyle a large oval patch of finer stereom.	en	Stöhr, Sabine (2024): Taxonomic analysis of the genital plates and associated structures in Ophiuroidea (Echinodermata). European Journal of Taxonomy 933: 1-98, DOI: 10.5852/ejt.2024.933.2525, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2525/11335
038987D9FFA7D75B0031C2DF1A3DFD99.taxon	description	Fig. 25 A – R	en	Stöhr, Sabine (2024): Taxonomic analysis of the genital plates and associated structures in Ophiuroidea (Echinodermata). European Journal of Taxonomy 933: 1-98, DOI: 10.5852/ejt.2024.933.2525, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2525/11335
038987D9FFA7D75B0031C2DF1A3DFD99.taxon	type_taxon	Type species Amphiura chiajei Forbes, 1843.	en	Stöhr, Sabine (2024): Taxonomic analysis of the genital plates and associated structures in Ophiuroidea (Echinodermata). European Journal of Taxonomy 933: 1-98, DOI: 10.5852/ejt.2024.933.2525, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2525/11335
038987D9FFA7D75B0031C2DF1A3DFD99.taxon	description	Oral GP Amphiura chiajei: comma-shaped, flat, with oval proximal end, thin, needle-like appendix on inner distal end curved towards proximal end. Amphiura filiformis: elongated, curved or straight (in same individual), proximal end thickened, without distal needle-like appendix. Paired plates meet under the oral shield with convex edges towards each other (A. chiajei). Adradial GP Distal end widened with lateral lobes, long bar-like proximal shank, laterally curved with distal end above arm vertebrae, left and right plate almost meeting. Abradial distal lobe with dense, smooth, flat articular structure meeting abGP, distal end with protruding edge and curved depression with single round condyle meeting condyle on radial shield. Abradial GP Sabre-shaped, flat, thin, narrow blade, curved with dorsal edge concave, ventral edge convex, with longitudinal dorsal rim, at dorsal distal end a denser, smooth and slightly concave articular structure matching lobe on adGP, straight distalmost edge also joining distal end of adGP. Proximal end crosses proximal end of adGP. As long as adGP. Oral shields Inner side proximal part thickened, distal part thin, flat. Madreporite all over thicker, only margins thin, large opening in distal half, narrow slit in one proximolateral part. Radial shield Inner side distal end with large domed condyle, bordered by long narrow dorsal groove, proximal to condyle a large oval patch with finer stereom.	en	Stöhr, Sabine (2024): Taxonomic analysis of the genital plates and associated structures in Ophiuroidea (Echinodermata). European Journal of Taxonomy 933: 1-98, DOI: 10.5852/ejt.2024.933.2525, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2525/11335
038987D9FFA7D75B0031C2DF1A3DFD99.taxon	discussion	Remarks Oral GP are visible externally in situ as large scale-like ossicles in Amphipholis squamata (Delle Chiaje, 1828), Amphioplus congensis (Studer, 1882), Acrocnida brachiata (Montagu, 1804) and in Silax cf. abditus Clark, 1970 (Stöhr & O’Hara 2021: fig. 2 e – f). In A. squamata, the adradial GP has a single distal lobe that articulates with the abradial GP, a single prominent condyle and a groove (Fig. 25 S), similar to Amphiura. The abradial GP in A. squamata is sabre-like flat with longitudinal rim, not as strongly curved as in Amphiura. The oral GP of the two examined species of Amphiura differ greatly in shape and more data are needed to understand the variability of these ossicles. Perhaps, the soft, often scale-less ventral disc of A. filiformis has led to the evolution of the elongated oral GP for support of the genital slit.	en	Stöhr, Sabine (2024): Taxonomic analysis of the genital plates and associated structures in Ophiuroidea (Echinodermata). European Journal of Taxonomy 933: 1-98, DOI: 10.5852/ejt.2024.933.2525, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2525/11335
038987D9FFA5D75B001CC2B81D49F941.taxon	description	Fig. 26	en	Stöhr, Sabine (2024): Taxonomic analysis of the genital plates and associated structures in Ophiuroidea (Echinodermata). European Journal of Taxonomy 933: 1-98, DOI: 10.5852/ejt.2024.933.2525, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2525/11335
038987D9FFA5D75B001CC2B81D49F941.taxon	type_taxon	Type species Amphiura norvegica Ljungman, 1865.	en	Stöhr, Sabine (2024): Taxonomic analysis of the genital plates and associated structures in Ophiuroidea (Echinodermata). European Journal of Taxonomy 933: 1-98, DOI: 10.5852/ejt.2024.933.2525, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2525/11335
038987D9FFA5D75B001CC2B81D49F941.taxon	description	Oral GP Not identified among small disc scales near oral shields. Adradial GP Bar-like, curved, proximal end tailfin-like broadened and pointed or rounded, abradial ventrolateral edge with fin-like process, distal end with adradial condyle, bordered by deep groove on abradial side, proximal to condyle a large round patch of almost imperforate stereom, edges extending disc-like from main plate. Abradial GP Thin, flat, half-circular with concave adradial edge, strongly convex abradial edge, straight adradial articular edge to adGP. Part of ventral disc, encircling small genital opening. About ⅔ of length of adGP. Oral shields Inner side flat, with horizontal ridge across middle. Madreporite with large oval opening in centre. Radial shield Inner side with distal large domed condyle, bordered by curved, wide distal ledge, proximal to condyle an oval, almost imperforate patch.	en	Stöhr, Sabine (2024): Taxonomic analysis of the genital plates and associated structures in Ophiuroidea (Echinodermata). European Journal of Taxonomy 933: 1-98, DOI: 10.5852/ejt.2024.933.2525, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2525/11335
038987D9FFA5D7550036C72E1B5FFC8B.taxon	description	Fig. 27	en	Stöhr, Sabine (2024): Taxonomic analysis of the genital plates and associated structures in Ophiuroidea (Echinodermata). European Journal of Taxonomy 933: 1-98, DOI: 10.5852/ejt.2024.933.2525, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2525/11335
038987D9FFA5D7550036C72E1B5FFC8B.taxon	type_taxon	= Ophilepis savignyi Müller & Troschel, 1842.	en	Stöhr, Sabine (2024): Taxonomic analysis of the genital plates and associated structures in Ophiuroidea (Echinodermata). European Journal of Taxonomy 933: 1-98, DOI: 10.5852/ejt.2024.933.2525, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2525/11335
038987D9FFA5D7550036C72E1B5FFC8B.taxon	description	Oral GP Drop-shaped, round with small lobe at one end (unknown if proximal or distal). (Only examined in O. abyssicola.) Adradial GP Bar-like, with longitudinal dorsal furrow, distally widened, somewhat thicker than proximal shank, single condyle bordered by deep groove, proximal to condyle a protruding patch of finer stereom articulating with abGP, separated from condyle by deep groove, forming wrench-shaped adradial distal end. Abradial GP Two thirds as long as adGP, thin, broadly sickle-shaped, strongly convex ventral edge, distally twice as wide as proximally, distal edge straight and articulating with adGP. Oral shields Distal half of inner side thickened, proximal half flat and thin. Madreporite thick, lateral margins flat, two large openings, one in centre, one offset from centre in proximal half. Radial shield Inner side with distal condyle, bordered by curved groove, proximal to condyle a round, rough patch.	en	Stöhr, Sabine (2024): Taxonomic analysis of the genital plates and associated structures in Ophiuroidea (Echinodermata). European Journal of Taxonomy 933: 1-98, DOI: 10.5852/ejt.2024.933.2525, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2525/11335
038987D9FFA5D7550036C72E1B5FFC8B.taxon	discussion	Remarks The presence of oral GPs was also observed externally in O. macrolepidota Marktanner-Turneretscher, 1887 and O. savignyi. These fissiparous species are not well suited for the examination of dissociated ossicles, because most individuals are a composite of parts in different stages of regeneration, and therefore the ossicles vary considerably in size and shape within an individual.	en	Stöhr, Sabine (2024): Taxonomic analysis of the genital plates and associated structures in Ophiuroidea (Echinodermata). European Journal of Taxonomy 933: 1-98, DOI: 10.5852/ejt.2024.933.2525, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2525/11335
038987D9FFA8D7570042C1591EC0FC25.taxon	description	Fig. 28	en	Stöhr, Sabine (2024): Taxonomic analysis of the genital plates and associated structures in Ophiuroidea (Echinodermata). European Journal of Taxonomy 933: 1-98, DOI: 10.5852/ejt.2024.933.2525, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2525/11335
038987D9FFA8D7570042C1591EC0FC25.taxon	type_taxon	Type species Asterias aculeata Linnaeus, 1767.	en	Stöhr, Sabine (2024): Taxonomic analysis of the genital plates and associated structures in Ophiuroidea (Echinodermata). European Journal of Taxonomy 933: 1-98, DOI: 10.5852/ejt.2024.933.2525, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2525/11335
038987D9FFA8D7570042C1591EC0FC25.taxon	description	Oral GP Flat, oval scale. Adradial GP Flat, blade-like for most of its length, distal end bulbous with several depressions and protrusions, curved dorsalwards. Proximal part tapered, ventral edge convex, dorsal edge straight. Distal condyle asymmetrically near arm meets condyle on RS, ridge at lateral abradial depression attaches to abGP. Large oval depression with finer stereom on dorsal side on proximal part of bulb. Abradial GP Kidney-shaped to half-circle, strong, half as long as adGP, distal end wider and thicker, with a groove that attaches to a ridge at adGP. Proximal end rounded tapered. Oral shields Oral shield inner surface with two weakly expressed spurs on midline. Madreporite inner surface proximally and in centre domed with large hole, opening in hydropore at proximal edge; lateral and distal margins flat and thinner. Radial shield Inner surface with large distal condyle, bordered by long, curved groove, proximal to condyle an oval patch of finer stereom.	en	Stöhr, Sabine (2024): Taxonomic analysis of the genital plates and associated structures in Ophiuroidea (Echinodermata). European Journal of Taxonomy 933: 1-98, DOI: 10.5852/ejt.2024.933.2525, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2525/11335
038987D9FFA9D751004BC4751B0EFEAA.taxon	description	Fig. 29	en	Stöhr, Sabine (2024): Taxonomic analysis of the genital plates and associated structures in Ophiuroidea (Echinodermata). European Journal of Taxonomy 933: 1-98, DOI: 10.5852/ejt.2024.933.2525, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2525/11335
038987D9FFA9D751004BC4751B0EFEAA.taxon	type_taxon	Type species Asterias fragilis Abildgaard in O. F. Müller, 1789.	en	Stöhr, Sabine (2024): Taxonomic analysis of the genital plates and associated structures in Ophiuroidea (Echinodermata). European Journal of Taxonomy 933: 1-98, DOI: 10.5852/ejt.2024.933.2525, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2525/11335
038987D9FFA9D751004BC4751B0EFEAA.taxon	description	Oral GP Oval scale-like, thin, as long as OS, some with notch in proximal part of ventral edge. Pair at acute angle, to either side of distal lobe on OS, half covered by OS. Visible through skin as v-shaped pair of ossicles, supporting proximal end of genital slits. Adradial GP Bar-like with bulbous distal end, curved with dorsal edge concave, ventral edge convex. Slanting away from arm, not completely vertical. Large, round, knob-like condyle at distal end bordered by deep groove meets similar condyle on underside of radial shield. Proximal to condyle several other protrusions and fine meshed stereom patches. Abradial GP Half-circle to kidney-shaped, dorsal edge concave in middle, straight in proximal half, dorso-distal end with concave articular groove, ventral edge strongly convex. Articulated with adradial GP by elongated depression. Almost dorsoventrally horizontal, only slightly downward slanting. Dorsal surface with radiating striations, ventral surface without. Oral shields Oral shield with distal lobe, to which at either side an oral GP attaches. Madreporite bulging in centre, with large central opening. Radial shield Large distal condyle, bordered by curved groove, proximal to condyle a kidney-shaped patch of smooth, finer meshed stereom.	en	Stöhr, Sabine (2024): Taxonomic analysis of the genital plates and associated structures in Ophiuroidea (Echinodermata). European Journal of Taxonomy 933: 1-98, DOI: 10.5852/ejt.2024.933.2525, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2525/11335
038987D9FFA9D751004BC4751B0EFEAA.taxon	discussion	Remarks In Ophiothrix, the oral GP are more obvious than in most other here examined genera, strong and large plates, in contrast to the small, thin scales covering the soft ventral disc.	en	Stöhr, Sabine (2024): Taxonomic analysis of the genital plates and associated structures in Ophiuroidea (Echinodermata). European Journal of Taxonomy 933: 1-98, DOI: 10.5852/ejt.2024.933.2525, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2525/11335
038987D9FFAFD7520012C1C41A75FCF1.taxon	description	Fig. 30	en	Stöhr, Sabine (2024): Taxonomic analysis of the genital plates and associated structures in Ophiuroidea (Echinodermata). European Journal of Taxonomy 933: 1-98, DOI: 10.5852/ejt.2024.933.2525, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2525/11335
038987D9FFAFD7520012C1C41A75FCF1.taxon	type_taxon	Type species Amphiactis umbonata Matsumoto, 1915.	en	Stöhr, Sabine (2024): Taxonomic analysis of the genital plates and associated structures in Ophiuroidea (Echinodermata). European Journal of Taxonomy 933: 1-98, DOI: 10.5852/ejt.2024.933.2525, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2525/11335
038987D9FFAFD7520012C1C41A75FCF1.taxon	description	Oral GP Oval scales, widely separated under OS, not visible externally. Adradial GP Bar-like narrow, flat shaft, distal end with condylar process and lip-like extension adradialwards, both connecting to condyles on RS. Proximal to condylar process on abradial edge a lateral process with flat surface, at adradial edge a larger flat process articulating with abGP. Distal adradial end somewhat wrench-shaped. Abradial GP Thin, flat, blade-like, abradial edge convex, adradial edge straight, distal end pointed. Articular structure a weakly offset distal part of adradial edge. Oral shields No special structures. Madreporite domed in centre with large opening. Radial shield Inner side with two low distal condyles, proximal to them a patch of finer stereom, no groove or ledge.	en	Stöhr, Sabine (2024): Taxonomic analysis of the genital plates and associated structures in Ophiuroidea (Echinodermata). European Journal of Taxonomy 933: 1-98, DOI: 10.5852/ejt.2024.933.2525, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2525/11335
038987D9FFACD75200DDC3E21E24F833.taxon	description	Fig. 31	en	Stöhr, Sabine (2024): Taxonomic analysis of the genital plates and associated structures in Ophiuroidea (Echinodermata). European Journal of Taxonomy 933: 1-98, DOI: 10.5852/ejt.2024.933.2525, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2525/11335
038987D9FFACD75200DDC3E21E24F833.taxon	type_taxon	Type species Ophiopsila aranea Forbes, 1843.	en	Stöhr, Sabine (2024): Taxonomic analysis of the genital plates and associated structures in Ophiuroidea (Echinodermata). European Journal of Taxonomy 933: 1-98, DOI: 10.5852/ejt.2024.933.2525, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2525/11335
038987D9FFACD75200DDC3E21E24F833.taxon	description	Oral GP Flat, elongated, bar-like. V-shaped pair distally at oral shield, meeting row of similar scales continuing to abGP along abradial edge of genital slit. Adradial GP Long, rod-like shaft, distally inflated. Single condyle bordered by shallow groove. As long as five arm segments. Abradial GP Sabre-shaped, flat. Distal edge straight with simple articular surface. Shorter than adGP. Oral shields Oral shield inner side with two knob-like median spurs and proximally thickened. Madreporite externally with two lateral rows of multiple hydropores, inner side thickened, with large opening in distal part, spurs less expressed than in OS. Radial shield Inner side with large distal condyle, bordered by groove, proximal to condyle a round patch of denser stereom.	en	Stöhr, Sabine (2024): Taxonomic analysis of the genital plates and associated structures in Ophiuroidea (Echinodermata). European Journal of Taxonomy 933: 1-98, DOI: 10.5852/ejt.2024.933.2525, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2525/11335
038987D9FFADD72C0002C5D41A2BFD1A.taxon	description	Fig. 32 A – E	en	Stöhr, Sabine (2024): Taxonomic analysis of the genital plates and associated structures in Ophiuroidea (Echinodermata). European Journal of Taxonomy 933: 1-98, DOI: 10.5852/ejt.2024.933.2525, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2525/11335
038987D9FFADD72C0002C5D41A2BFD1A.taxon	type_taxon	Type species Ophiopus arcticus Ljungman, 1867.	en	Stöhr, Sabine (2024): Taxonomic analysis of the genital plates and associated structures in Ophiuroidea (Echinodermata). European Journal of Taxonomy 933: 1-98, DOI: 10.5852/ejt.2024.933.2525, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2525/11335
038987D9FFADD72C0002C5D41A2BFD1A.taxon	description	Oral GP Absent. Adradial GP Wrench-shaped adradio-dorsal distal end, single flat distal condyle bordered by groove, separated from round process by deep incision, process finer meshed on adradial side. Proximal half bar-like, with longitudinal groove in abradial surface. On abradial side a longitudinal groove. Abradial GP Absent. Oral shields Inner side in distal half laterally thinner with smoother, finer porous stereom. Madreporite inner side with large centrodistal opening. Radial shield Articular structure a low condyle and groove, large round patch of finer stereom proximal to condyle.	en	Stöhr, Sabine (2024): Taxonomic analysis of the genital plates and associated structures in Ophiuroidea (Echinodermata). European Journal of Taxonomy 933: 1-98, DOI: 10.5852/ejt.2024.933.2525, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2525/11335
038987D9FFADD72C0002C5D41A2BFD1A.taxon	discussion	Remarks Ophiopus arcticus lacks genital slits, which may explain the absence of oral GP and abradial GP.	en	Stöhr, Sabine (2024): Taxonomic analysis of the genital plates and associated structures in Ophiuroidea (Echinodermata). European Journal of Taxonomy 933: 1-98, DOI: 10.5852/ejt.2024.933.2525, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2525/11335
038987D9FFD3D72D0040C11B1D10FAF0.taxon	description	Fig. 32 F – I	en	Stöhr, Sabine (2024): Taxonomic analysis of the genital plates and associated structures in Ophiuroidea (Echinodermata). European Journal of Taxonomy 933: 1-98, DOI: 10.5852/ejt.2024.933.2525, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2525/11335
038987D9FFD3D72D0040C11B1D10FAF0.taxon	type_taxon	Type species Ophienigma spinilimbatum Stöhr & Segonzac, 2005.	en	Stöhr, Sabine (2024): Taxonomic analysis of the genital plates and associated structures in Ophiuroidea (Echinodermata). European Journal of Taxonomy 933: 1-98, DOI: 10.5852/ejt.2024.933.2525, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2525/11335
038987D9FFD3D72D0040C11B1D10FAF0.taxon	description	Oral GP Not examined. Adradial GP Wrench-shaped adradio-dorsal distal end (condyle separated from process by deep incision), single condyle bordered by shallow groove. Abradial GP Sickle-shaped, flat, distally with concave articular structure, almost as long as adGP. Oral shields Madreporite with large centrodistal opening. Radial shield Single condyle and shallow groove. Patch of finer meshed stereom proximal to condyle.	en	Stöhr, Sabine (2024): Taxonomic analysis of the genital plates and associated structures in Ophiuroidea (Echinodermata). European Journal of Taxonomy 933: 1-98, DOI: 10.5852/ejt.2024.933.2525, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2525/11335
038987D9FFD3D72D0040C11B1D10FAF0.taxon	discussion	Remarks The genital plates and madreporites of Ophienigma spinilimbatum and Ophiopus arcticus show great similarity, which suggests that they are most likely closely related. The wrench shape of the adradial GP is also shared with Ophiactis.	en	Stöhr, Sabine (2024): Taxonomic analysis of the genital plates and associated structures in Ophiuroidea (Echinodermata). European Journal of Taxonomy 933: 1-98, DOI: 10.5852/ejt.2024.933.2525, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2525/11335
038987D9FFD3D72E000CC5D91DACFC4D.taxon	description	Fig. 33	en	Stöhr, Sabine (2024): Taxonomic analysis of the genital plates and associated structures in Ophiuroidea (Echinodermata). European Journal of Taxonomy 933: 1-98, DOI: 10.5852/ejt.2024.933.2525, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2525/11335
038987D9FFD3D72E000CC5D91DACFC4D.taxon	type_taxon	Type species Ophiernus vallincola Lyman, 1878.	en	Stöhr, Sabine (2024): Taxonomic analysis of the genital plates and associated structures in Ophiuroidea (Echinodermata). European Journal of Taxonomy 933: 1-98, DOI: 10.5852/ejt.2024.933.2525, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2525/11335
038987D9FFD3D72E000CC5D91DACFC4D.taxon	description	Oral GP Not recognized among disc scales, may be absent. Adradial GP Long, narrow, bar-like, distal end slightly wider, with triangular process at ventro-abradial edge, ending in single condyle and curved groove with high edge. Abradial GP Blade-like flat, straight, articular structure slightly concave part on dorso-distal edge. More than half as long as adGP. Oral shields Coarse inner side, middle slightly thicker, madreporite with lateral pore in central part. Radial shield Articular structure with several minute spurs in middle of distal edge. No obvious muscle attachment patch on inner side.	en	Stöhr, Sabine (2024): Taxonomic analysis of the genital plates and associated structures in Ophiuroidea (Echinodermata). European Journal of Taxonomy 933: 1-98, DOI: 10.5852/ejt.2024.933.2525, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2525/11335
038987D9FFD3D72E000CC5D91DACFC4D.taxon	discussion	Remarks The ventral disc of O. vallincola is covered by delicate thin scales, embedded in thick skin. The oral shields distally overlay several scales, but none of them appeared to articulate with the oral shield. Oral genital plates may thus be reduced and are considered absent for now. External examination of species of Ophioleuce Koehler, 1904 suggests that oGP may be present in the shape of thin, elongated scales at the proximal end of the genital slit, abutting the oral shield distolaterally, but this needs to be verified when material for maceration is available.	en	Stöhr, Sabine (2024): Taxonomic analysis of the genital plates and associated structures in Ophiuroidea (Echinodermata). European Journal of Taxonomy 933: 1-98, DOI: 10.5852/ejt.2024.933.2525, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2525/11335
038987D9FFD1D7280003C1551D4DFC10.taxon	description	Fig. 34	en	Stöhr, Sabine (2024): Taxonomic analysis of the genital plates and associated structures in Ophiuroidea (Echinodermata). European Journal of Taxonomy 933: 1-98, DOI: 10.5852/ejt.2024.933.2525, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2525/11335
038987D9FFD1D7280003C1551D4DFC10.taxon	type_taxon	Type species Ophiopallas paradoxa Koehler, 1904.	en	Stöhr, Sabine (2024): Taxonomic analysis of the genital plates and associated structures in Ophiuroidea (Echinodermata). European Journal of Taxonomy 933: 1-98, DOI: 10.5852/ejt.2024.933.2525, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2525/11335
038987D9FFD1D7280003C1551D4DFC10.taxon	description	Oral GP Minute, at laterodistal edges of OS, also connected to adoral shield, adradial surface flat, abradial side with longitudinal median keel-like ridge. Adradial GP Blade-like, ventrally convex, dorsally straight edge, pointed proximal end, scoop-shaped distal end, terminating in curved groove and single condyle, on adradial side proximal to articular structures a finer stereom patch, on abradial distal end sickle-shaped ridge articulating with abGP. Abradial GP Wide flat blade, as long as adGP, twice as wide, distal articular structure as concave notch. Oral shields Flat, with horizontal spurs dividing OS in proximal and distal halves. Madreporite flat, with central large opening. Radial shield Single low condyle bordered by short distal groove. Proximal to condyle a round, finely porous patch on a larger, coarsely meshed area.	en	Stöhr, Sabine (2024): Taxonomic analysis of the genital plates and associated structures in Ophiuroidea (Echinodermata). European Journal of Taxonomy 933: 1-98, DOI: 10.5852/ejt.2024.933.2525, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2525/11335
038987D9FFD6D72802EEC6801D24F8CD.taxon	description	(Ophiurina incertae sedis), Early Carboniferous: adGP cleaver-shaped, long, bar-like proximal part with widened distal third, distal abradial edge broadened and flat. abGP absent or perhaps fused to adGP. Articular structures with one or two condyles. RS inner side, abGP and oGP unknown.	en	Stöhr, Sabine (2024): Taxonomic analysis of the genital plates and associated structures in Ophiuroidea (Echinodermata). European Journal of Taxonomy 933: 1-98, DOI: 10.5852/ejt.2024.933.2525, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2525/11335
038987D9FFD6D72802EEC5091C53FA83.taxon	description	at 3.2 mm dd, the adGP is conical with a wide, flat distal surface; the cup-shaped abGP is about the same size as the adGP.	en	Stöhr, Sabine (2024): Taxonomic analysis of the genital plates and associated structures in Ophiuroidea (Echinodermata). European Journal of Taxonomy 933: 1-98, DOI: 10.5852/ejt.2024.933.2525, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2525/11335
038987D9FFD6D72802EEC5931A38FA65.taxon	description	genital plates are present at a disc diameter less than 1 mm, at 1.12 mm dd the adGP is curved, flat, distally thicker and widened, specific articular structures cannot be identified.	en	Stöhr, Sabine (2024): Taxonomic analysis of the genital plates and associated structures in Ophiuroidea (Echinodermata). European Journal of Taxonomy 933: 1-98, DOI: 10.5852/ejt.2024.933.2525, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2525/11335
038987D9FFD6D72802EEC72D1E9DF832.taxon	description	(Ophiacanthida incertae sedis), Late Triassic: adGP long club-like, distal end curving dorsalwards. abGP blade-like flat, almost as long as adGP, inserting at distal end of adGP. Articular structures with at least one low condyle and a groove. RS with two condyles, larger distally bordered by curved groove, a muscle attachment patch of denser stereom proximal to condyle. Oral GP unknown.	en	Stöhr, Sabine (2024): Taxonomic analysis of the genital plates and associated structures in Ophiuroidea (Echinodermata). European Journal of Taxonomy 933: 1-98, DOI: 10.5852/ejt.2024.933.2525, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2525/11335
038987D9FFD6D72802EEC4A71E4CFB29.taxon	description	at 2.4 mm dd, the adGP is elongated flat and weakly s-curved; the abGP is a flat round scale.	en	Stöhr, Sabine (2024): Taxonomic analysis of the genital plates and associated structures in Ophiuroidea (Echinodermata). European Journal of Taxonomy 933: 1-98, DOI: 10.5852/ejt.2024.933.2525, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2525/11335
038987D9FFD6D72802EEC4391CA9FB57.taxon	description	genital plates are present at a disc diameter of under 1 mm, at 1.12 mm dd the adGP is conical with flat distal end, the abGP is rounded triangular, both are larger and more defined at 1.4 mm dd. In juveniles of about 3 mm dd, both GPs are equal in length.	en	Stöhr, Sabine (2024): Taxonomic analysis of the genital plates and associated structures in Ophiuroidea (Echinodermata). European Journal of Taxonomy 933: 1-98, DOI: 10.5852/ejt.2024.933.2525, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2525/11335
038987D9FFD7D72902EEC11B1B5DFE51.taxon	discussion	(Ophiopyrgidae?),	en	Stöhr, Sabine (2024): Taxonomic analysis of the genital plates and associated structures in Ophiuroidea (Echinodermata). European Journal of Taxonomy 933: 1-98, DOI: 10.5852/ejt.2024.933.2525, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2525/11335
038987D9FFD7D72902EEC11B1B5DFE51.taxon	description	Middle Triassic to Early Jurassic: adGP clubshaped with long, rod-like proximal part, inflated distal part angling dorsalwards. Articular structures possibly with one or two condyles, and a patch or process proximal to inflated end. abGP cup-shaped, exposed distally, bearing large, flat, rectangular papillae forming an arm comb.	en	Stöhr, Sabine (2024): Taxonomic analysis of the genital plates and associated structures in Ophiuroidea (Echinodermata). European Journal of Taxonomy 933: 1-98, DOI: 10.5852/ejt.2024.933.2525, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2525/11335
038987D9FFD4D72A02B0C6F11D2BF8BF.taxon	description	- adGP flat, condyles reduced - abGP unknown, may be absent - RS inner side unknown	en	Stöhr, Sabine (2024): Taxonomic analysis of the genital plates and associated structures in Ophiuroidea (Echinodermata). European Journal of Taxonomy 933: 1-98, DOI: 10.5852/ejt.2024.933.2525, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2525/11335
038987D9FFD4D72A02EEC4FC1EC2FAF1.taxon	description	- oral GP absent	en	Stöhr, Sabine (2024): Taxonomic analysis of the genital plates and associated structures in Ophiuroidea (Echinodermata). European Journal of Taxonomy 933: 1-98, DOI: 10.5852/ejt.2024.933.2525, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2525/11335
038987D9FFD4D72A02B0C64C1DE8F967.taxon	discussion	Ophiopyrgidae,	en	Stöhr, Sabine (2024): Taxonomic analysis of the genital plates and associated structures in Ophiuroidea (Echinodermata). European Journal of Taxonomy 933: 1-98, DOI: 10.5852/ejt.2024.933.2525, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2525/11335
038987D9FFD4D72A02B0C64C1DE8F967.taxon	description	- abGP as long as adGP - RS with single low condyle, one groove	en	Stöhr, Sabine (2024): Taxonomic analysis of the genital plates and associated structures in Ophiuroidea (Echinodermata). European Journal of Taxonomy 933: 1-98, DOI: 10.5852/ejt.2024.933.2525, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2525/11335
038987D9FFD4D72A02EEC5401BCBFA6B.taxon	description	- adGP long, bar-like, distally bulbous with two condyles (except Astrophiura) - madreporite inner side with large central opening (not confirmed in Astrophiura)	en	Stöhr, Sabine (2024): Taxonomic analysis of the genital plates and associated structures in Ophiuroidea (Echinodermata). European Journal of Taxonomy 933: 1-98, DOI: 10.5852/ejt.2024.933.2525, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2525/11335
038987D9FFD4D72A02B0C5CA1DE6F9ED.taxon	description	- abGP shorter than adGP, cup-like - RS with two low condyles, one groove	en	Stöhr, Sabine (2024): Taxonomic analysis of the genital plates and associated structures in Ophiuroidea (Echinodermata). European Journal of Taxonomy 933: 1-98, DOI: 10.5852/ejt.2024.933.2525, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2525/11335
038987D9FFD4D72B02EEC7981CBCFE5D.taxon	discussion	Euryalida Asteronychidae, Gorgonocephalidae	en	Stöhr, Sabine (2024): Taxonomic analysis of the genital plates and associated structures in Ophiuroidea (Echinodermata). European Journal of Taxonomy 933: 1-98, DOI: 10.5852/ejt.2024.933.2525, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2525/11335
038987D9FFD4D72B02EEC7981CBCFE5D.taxon	description	- RS with overlapping scales, easily fragmenting, flat articular structures	en	Stöhr, Sabine (2024): Taxonomic analysis of the genital plates and associated structures in Ophiuroidea (Echinodermata). European Journal of Taxonomy 933: 1-98, DOI: 10.5852/ejt.2024.933.2525, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2525/11335
038987D9FFD4D72B02EEC7981CBCFE5D.taxon	description	- adGP bar-like, with bulbous distal end, articular structures large and flat - abGP articulates proximal to bulbous part or may be fused to adGP - madreporite inner side a meshwork of lamellae and pores	en	Stöhr, Sabine (2024): Taxonomic analysis of the genital plates and associated structures in Ophiuroidea (Echinodermata). European Journal of Taxonomy 933: 1-98, DOI: 10.5852/ejt.2024.933.2525, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2525/11335
038987D9FFD5D72B02B0C1BE1DCCFDD2.taxon	description	- adGP and abGP fused together, single flat articular structure - madreporite with two inner openings	en	Stöhr, Sabine (2024): Taxonomic analysis of the genital plates and associated structures in Ophiuroidea (Echinodermata). European Journal of Taxonomy 933: 1-98, DOI: 10.5852/ejt.2024.933.2525, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2525/11335
038987D9FFD5D72B02B0C23F1B02FD37.taxon	description	- adGP bar-like, distally inflated, flat articular structures - abGP elongated half-circle, distally thicker, flat articular structures - RS without scales, easily fragmenting, bar-like, curved, dorsodistally spatulate, ventrally round and thick, flat articular structures - madreporite inner side with large openings or network structure	en	Stöhr, Sabine (2024): Taxonomic analysis of the genital plates and associated structures in Ophiuroidea (Echinodermata). European Journal of Taxonomy 933: 1-98, DOI: 10.5852/ejt.2024.933.2525, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2525/11335
038987D9FFD5D72B02EEC5481A11FA4C.taxon	description	- madreporite inner side with large opening near distal edge (except in Ophiocamacidae)	en	Stöhr, Sabine (2024): Taxonomic analysis of the genital plates and associated structures in Ophiuroidea (Echinodermata). European Journal of Taxonomy 933: 1-98, DOI: 10.5852/ejt.2024.933.2525, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2525/11335
038987D9FFD5D72B02EEC3001C2FFC97.taxon	description	- oral GP present (sometimes secondarily lost)	en	Stöhr, Sabine (2024): Taxonomic analysis of the genital plates and associated structures in Ophiuroidea (Echinodermata). European Journal of Taxonomy 933: 1-98, DOI: 10.5852/ejt.2024.933.2525, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2525/11335
038987D9FFD5D72B02B0C62F1CAEF960.taxon	description	- adGP club-like with two condyles - abGP rectangular, attached to distal bulb of adGP - RS with two large, low condyles, rough patch in middle	en	Stöhr, Sabine (2024): Taxonomic analysis of the genital plates and associated structures in Ophiuroidea (Echinodermata). European Journal of Taxonomy 933: 1-98, DOI: 10.5852/ejt.2024.933.2525, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2525/11335
038987D9FFD5D72B0287C5A91D55F9CD.taxon	description	- oral GP comma-shaped - abGP half as long as adGP	en	Stöhr, Sabine (2024): Taxonomic analysis of the genital plates and associated structures in Ophiuroidea (Echinodermata). European Journal of Taxonomy 933: 1-98, DOI: 10.5852/ejt.2024.933.2525, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2525/11335
038987D9FFD5D72B02B0C4851DE0FAEF.taxon	description	- oral GP absent - adGP thin, flat, straight, blade-like, articular structure weakly domed - RS absent - madreporite with small central opening	en	Stöhr, Sabine (2024): Taxonomic analysis of the genital plates and associated structures in Ophiuroidea (Echinodermata). European Journal of Taxonomy 933: 1-98, DOI: 10.5852/ejt.2024.933.2525, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2525/11335
038987D9FFD5D72B02B0C6CD1C70F885.taxon	description	- adGP bar-like, proximally flattened, no condyles - abGP blade-like flat, thin, attached at middle of adGP - RS articular structure a distal, denser stereom patch	en	Stöhr, Sabine (2024): Taxonomic analysis of the genital plates and associated structures in Ophiuroidea (Echinodermata). European Journal of Taxonomy 933: 1-98, DOI: 10.5852/ejt.2024.933.2525, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2525/11335
038987D9FFD5D72B02EEC3601DA1FC74.taxon	description	- abGP thin, flat, straight blade-like	en	Stöhr, Sabine (2024): Taxonomic analysis of the genital plates and associated structures in Ophiuroidea (Echinodermata). European Journal of Taxonomy 933: 1-98, DOI: 10.5852/ejt.2024.933.2525, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2525/11335
038987D9FFD5D72B02B0C3C11C70FBAB.taxon	description	- oral GP oval, thin - adGP bar-like, with simple flat articular structures - RS (when present) with simple flat articular structure - madreporite with large asymmetrical distal opening	en	Stöhr, Sabine (2024): Taxonomic analysis of the genital plates and associated structures in Ophiuroidea (Echinodermata). European Journal of Taxonomy 933: 1-98, DOI: 10.5852/ejt.2024.933.2525, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2525/11335
038987D9FFD5D72402B0C7951C97FEB1.taxon	discussion	Ophiocomoidea /	en	Stöhr, Sabine (2024): Taxonomic analysis of the genital plates and associated structures in Ophiuroidea (Echinodermata). European Journal of Taxonomy 933: 1-98, DOI: 10.5852/ejt.2024.933.2525, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2525/11335
038987D9FFD5D72402B0C7951C97FEB1.taxon	description	- oral GP flat, short L-shaped - adGP bar-like, flat, single condyle with spiral groove - abGP boomerang-shaped - RS with single low condyle and groove, middle denser stereom patch - madreporite with additional distolateral wide opening	en	Stöhr, Sabine (2024): Taxonomic analysis of the genital plates and associated structures in Ophiuroidea (Echinodermata). European Journal of Taxonomy 933: 1-98, DOI: 10.5852/ejt.2024.933.2525, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2525/11335
038987D9FFDAD72402EEC6471B45F948.taxon	description	- madreporite inner side with single large opening in varying positions	en	Stöhr, Sabine (2024): Taxonomic analysis of the genital plates and associated structures in Ophiuroidea (Echinodermata). European Journal of Taxonomy 933: 1-98, DOI: 10.5852/ejt.2024.933.2525, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2525/11335
038987D9FFDAD72402B0C20D1D86FD11.taxon	description	- oral GP with folded edge - adGP bar-like, distally weakly inflated, with single condyle - abGP kidney-shaped, thin, half as long as adGP - RS without articular structures	en	Stöhr, Sabine (2024): Taxonomic analysis of the genital plates and associated structures in Ophiuroidea (Echinodermata). European Journal of Taxonomy 933: 1-98, DOI: 10.5852/ejt.2024.933.2525, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2525/11335
038987D9FFDAD72402EEC1861D9DFE2D.taxon	description	- oral GP rectangular - adGP bar-like, distally thickened	en	Stöhr, Sabine (2024): Taxonomic analysis of the genital plates and associated structures in Ophiuroidea (Echinodermata). European Journal of Taxonomy 933: 1-98, DOI: 10.5852/ejt.2024.933.2525, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2525/11335
038987D9FFDAD72402EEC6A81C0EF8BA.taxon	discussion	Incertae sedis (Ophiopus,	en	Stöhr, Sabine (2024): Taxonomic analysis of the genital plates and associated structures in Ophiuroidea (Echinodermata). European Journal of Taxonomy 933: 1-98, DOI: 10.5852/ejt.2024.933.2525, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2525/11335
038987D9FFDAD72402EEC6A81C0EF8BA.taxon	description	- oral GP unknown - adGP wrench-shaped - abGP sickle-shaped, low condyle - centro-distal opening in inner madreporite	en	Stöhr, Sabine (2024): Taxonomic analysis of the genital plates and associated structures in Ophiuroidea (Echinodermata). European Journal of Taxonomy 933: 1-98, DOI: 10.5852/ejt.2024.933.2525, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2525/11335
038987D9FFDAD72402B0C4ED1DD4FA59.taxon	description	- adGP bar-like, distal triangular lateral process, single condyle, groove - abGP flat blade-like, concave articular structure - RS articular structure as minute spurs	en	Stöhr, Sabine (2024): Taxonomic analysis of the genital plates and associated structures in Ophiuroidea (Echinodermata). European Journal of Taxonomy 933: 1-98, DOI: 10.5852/ejt.2024.933.2525, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2525/11335
038987D9FFDAD72402B0C2E11C1CFC19.taxon	description	- oral GP strongly curved - adGP bar-like, distally weakly inflated, with single condyle - abGP blade-like flat - RS with single condyle and groove - madreporite inner side with central opening	en	Stöhr, Sabine (2024): Taxonomic analysis of the genital plates and associated structures in Ophiuroidea (Echinodermata). European Journal of Taxonomy 933: 1-98, DOI: 10.5852/ejt.2024.933.2525, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2525/11335
038987D9FFDAD72402EEC79A1B0CF832.taxon	discussion	Ophionereidina	en	Stöhr, Sabine (2024): Taxonomic analysis of the genital plates and associated structures in Ophiuroidea (Echinodermata). European Journal of Taxonomy 933: 1-98, DOI: 10.5852/ejt.2024.933.2525, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2525/11335
038987D9FFDAD72402EEC79A1B0CF832.taxon	description	- central opening in inner madreporite (unknown in Hemieuryale)	en	Stöhr, Sabine (2024): Taxonomic analysis of the genital plates and associated structures in Ophiuroidea (Echinodermata). European Journal of Taxonomy 933: 1-98, DOI: 10.5852/ejt.2024.933.2525, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2525/11335
038987D9FFDAD72402EEC4881DC1FB02.taxon	description	- central opening in inner madreporite	en	Stöhr, Sabine (2024): Taxonomic analysis of the genital plates and associated structures in Ophiuroidea (Echinodermata). European Journal of Taxonomy 933: 1-98, DOI: 10.5852/ejt.2024.933.2525, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2525/11335
038987D9FFDAD72402B0C5B81C50F9F4.taxon	description	- adGP bar-like, distally scoop-shaped, condyle and curved groove, several stereom patches - abGP wide blade-like, articular structure concave notch - RS with low condyle, groove, round rough patch	en	Stöhr, Sabine (2024): Taxonomic analysis of the genital plates and associated structures in Ophiuroidea (Echinodermata). European Journal of Taxonomy 933: 1-98, DOI: 10.5852/ejt.2024.933.2525, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2525/11335
038987D9FFDAD72402B0C3FE1D06FBA9.taxon	description	- oral GP with lobe - adGP bar-like, distally widened, with two condylar processes - abGP sickle-shaped	en	Stöhr, Sabine (2024): Taxonomic analysis of the genital plates and associated structures in Ophiuroidea (Echinodermata). European Journal of Taxonomy 933: 1-98, DOI: 10.5852/ejt.2024.933.2525, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2525/11335
038987D9FFDBD72502B0C61E1B4AF96E.taxon	description	- oral GP not identified, possibly absent - adGP bar-like, lateral protrusions, single condyle and groove - abGP half-circular, thin - RS with large condyle, wide ledge, smooth patch proximal to condyle	en	Stöhr, Sabine (2024): Taxonomic analysis of the genital plates and associated structures in Ophiuroidea (Echinodermata). European Journal of Taxonomy 933: 1-98, DOI: 10.5852/ejt.2024.933.2525, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2525/11335
038987D9FFDBD72502B0C2EC1C8FFC7B.taxon	description	- oral GP rectangular, thin - adGP bar-like, distal end widened - abGP twisted s-shaped with proximalwards directed distal appendix - RS articular structures single flat condyle and groove	en	Stöhr, Sabine (2024): Taxonomic analysis of the genital plates and associated structures in Ophiuroidea (Echinodermata). European Journal of Taxonomy 933: 1-98, DOI: 10.5852/ejt.2024.933.2525, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2525/11335
038987D9FFDBD72502B0C52F1A36FA3F.taxon	description	- oral GP rounded comma-shaped or elongated curved, with or without pointed appendix - adGP distally lobed, with bar-like shank, single condyle and groove - abGP long sabre-like, thin, with adradial longitudinal rim - RS with single condyle, curved groove and narrow ledge, oval patch proximal to condyle	en	Stöhr, Sabine (2024): Taxonomic analysis of the genital plates and associated structures in Ophiuroidea (Echinodermata). European Journal of Taxonomy 933: 1-98, DOI: 10.5852/ejt.2024.933.2525, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2525/11335
038987D9FFDBD72502EEC4A71C0EFACC.taxon	discussion	Gnathophiurina	en	Stöhr, Sabine (2024): Taxonomic analysis of the genital plates and associated structures in Ophiuroidea (Echinodermata). European Journal of Taxonomy 933: 1-98, DOI: 10.5852/ejt.2024.933.2525, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2525/11335
038987D9FFDBD72502EEC4A71C0EFACC.taxon	description	- centro-distal opening in inner madreporite	en	Stöhr, Sabine (2024): Taxonomic analysis of the genital plates and associated structures in Ophiuroidea (Echinodermata). European Journal of Taxonomy 933: 1-98, DOI: 10.5852/ejt.2024.933.2525, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2525/11335
038987D9FFDBD72502B0C11B1B15FE76.taxon	description	- oral GP possibly large, flat scale (but not examined) - adGP comma-shaped, articular structures as depression and ledge - abGP scoop-shaped, articular structure concave (minute or missing in Hemieuryale) - RS articular structures depression, narrow ledge and rough patch	en	Stöhr, Sabine (2024): Taxonomic analysis of the genital plates and associated structures in Ophiuroidea (Echinodermata). European Journal of Taxonomy 933: 1-98, DOI: 10.5852/ejt.2024.933.2525, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2525/11335
038987D9FFDBD72502B0C7531CF2F832.taxon	description	- oral GP drop-shaped - adGP wrench-like, distally wider, but flat, single condyle and groove - abGP half as long as adGP, sickle-shaped, articular structure a straight distal edge - RS with condyle and ledge, smooth patch proximal to condyle	en	Stöhr, Sabine (2024): Taxonomic analysis of the genital plates and associated structures in Ophiuroidea (Echinodermata). European Journal of Taxonomy 933: 1-98, DOI: 10.5852/ejt.2024.933.2525, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2525/11335
038987D9FFDBD7250287C6CE1DC1F8C3.taxon	description	- central opening in inner madreporite	en	Stöhr, Sabine (2024): Taxonomic analysis of the genital plates and associated structures in Ophiuroidea (Echinodermata). European Journal of Taxonomy 933: 1-98, DOI: 10.5852/ejt.2024.933.2525, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2525/11335
038987D9FFDBD72502B0C1C01B04FDAF.taxon	description	- oral GP oval pyramid-shaped - adGP cleaver-shaped, articular structures as low condyle and ledge - abGP rounded scalene triangular, wider than adGP - RS articular structures embossed distal end, ledge, coarse patch	en	Stöhr, Sabine (2024): Taxonomic analysis of the genital plates and associated structures in Ophiuroidea (Echinodermata). European Journal of Taxonomy 933: 1-98, DOI: 10.5852/ejt.2024.933.2525, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2525/11335
038987D9FFDBD72502B0C3D51D59FB57.taxon	description	- oral GP oval, thin - adGP more or less cleaver-shaped, distal edge widened abradially, distal low condyle - abGP bar-like, as long as adGP, articular structure straight or concave edge (with distal angle ‘ hockey-stick shape’ in Ophiochiton) - RS with single low condyle	en	Stöhr, Sabine (2024): Taxonomic analysis of the genital plates and associated structures in Ophiuroidea (Echinodermata). European Journal of Taxonomy 933: 1-98, DOI: 10.5852/ejt.2024.933.2525, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2525/11335
038987D9FFDBD7250287C2891DB1FD0D.taxon	description	- distal opening in inner madreporite	en	Stöhr, Sabine (2024): Taxonomic analysis of the genital plates and associated structures in Ophiuroidea (Echinodermata). European Journal of Taxonomy 933: 1-98, DOI: 10.5852/ejt.2024.933.2525, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2525/11335
038987D9FFD8D72602B0C11B1C16FE6F.taxon	description	- oral GP thin, oval - adGP bar-like, bulbous distal end, two condyles, lateral ridge - abGP kidney-shaped, articular structure a groove - RS with large condyle, long curved groove	en	Stöhr, Sabine (2024): Taxonomic analysis of the genital plates and associated structures in Ophiuroidea (Echinodermata). European Journal of Taxonomy 933: 1-98, DOI: 10.5852/ejt.2024.933.2525, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2525/11335
038987D9FFD8D72602B0C3FF1DF0FBAF.taxon	description	- oral GP elongated, narrow, thin - adGP with single condyle and shallow groove - abGP sabre-like, simple articular surface	en	Stöhr, Sabine (2024): Taxonomic analysis of the genital plates and associated structures in Ophiuroidea (Echinodermata). European Journal of Taxonomy 933: 1-98, DOI: 10.5852/ejt.2024.933.2525, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2525/11335
038987D9FFD8D72602EEC3941DB1FC1F.taxon	description	- distal opening in inner madreporite	en	Stöhr, Sabine (2024): Taxonomic analysis of the genital plates and associated structures in Ophiuroidea (Echinodermata). European Journal of Taxonomy 933: 1-98, DOI: 10.5852/ejt.2024.933.2525, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2525/11335
038987D9FFD8D72602B0C2A01DFBFC87.taxon	description	- oral GP unknown - adGP bar-like with bulbous end, condylar process - abGP thin, flat, blade-like - RS with low condyle, no groove or ledge	en	Stöhr, Sabine (2024): Taxonomic analysis of the genital plates and associated structures in Ophiuroidea (Echinodermata). European Journal of Taxonomy 933: 1-98, DOI: 10.5852/ejt.2024.933.2525, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2525/11335
038987D9FFD8D72602B0C1CF1DD2FD50.taxon	description	- oral GP thin, oval, distal notch - adGP bar-like bulbous, domed condyle and ledge - abGP half-circle, articular structure concave distal edge - RS with large condyle, curved groove	en	Stöhr, Sabine (2024): Taxonomic analysis of the genital plates and associated structures in Ophiuroidea (Echinodermata). European Journal of Taxonomy 933: 1-98, DOI: 10.5852/ejt.2024.933.2525, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2525/11335
