taxonID	type	format	identifier	references	title	description	created	creator	contributor	publisher	audience	source	license	rightsHolder	datasetID
0D0A0B06FFC0FFFF61E18093FABDFBFA.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/5432950/files/figure.png	https://doi.org/10.5281/zenodo.5432950	Figure 1. Asteronyx loveni postlarval development, note the thick, partly removed, skin. A, 1.8 mm dd postlarva dorsal; B, arm of same postlarva, note the radial shields; C, same individual ventral, note the large adoral shields; D, 2.5 mm dd postlarva dorsal; E, same individual ventral; F, arm of same individual lateral; G, vertebra proximal face; H, vertebra distal face; I, bulbous terminal plate; J, 3.2 mm postlarva dorsal; K, same ventral; L, arm distal, note the wide terminal plate; M, 4 mm dd postlarva dorsal; N, same ventral; O, arm spines of same; P, 3.2 mm postlarva vertebra proximal face; Q, distal face. Abbreviations: AS, adoral shield; LAP, lateral arm plate; M, madreporite; PP, primary plates; RPP, radial primary plates; RS, radial shield. Scale bars in millimetres.	Figure 1. Asteronyx loveni postlarval development, note the thick, partly removed, skin. A, 1.8 mm dd postlarva dorsal; B, arm of same postlarva, note the radial shields; C, same individual ventral, note the large adoral shields; D, 2.5 mm dd postlarva dorsal; E, same individual ventral; F, arm of same individual lateral; G, vertebra proximal face; H, vertebra distal face; I, bulbous terminal plate; J, 3.2 mm postlarva dorsal; K, same ventral; L, arm distal, note the wide terminal plate; M, 4 mm dd postlarva dorsal; N, same ventral; O, arm spines of same; P, 3.2 mm postlarva vertebra proximal face; Q, distal face. Abbreviations: AS, adoral shield; LAP, lateral arm plate; M, madreporite; PP, primary plates; RPP, radial primary plates; RS, radial shield. Scale bars in millimetres.	2005-04-30	Stöhr, Sabine		Zenodo	biologists	Stöhr, Sabine			
0D0A0B06FFC1FFF461558171FD31FF48.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/5432952/files/figure.png	https://doi.org/10.5281/zenodo.5432952	Figure 2. Ophioscolex glacialis postlarval development. A, 0.5 mm dd postlarva dorsal; B, 0.9 mm dd postlarva dorsal; C, 0.9 mm postlarva ventral; D–G, 1.7 mm postlarvae; D, lateral; E, dorsal, note the irregular pattern of plates; F, arm dorsal; G, ventral, a spiniform tooth and two mouth papillae have formed; H, I, 3 mm dd juvenile ventral, note the large adoral shield spine; J, K, adult ventral. Abbreviations: ASS, adoral shield spine; DP, dental plate; OS, oral shield; others as in Fig. 1. Scale bars in millimetres.	Figure 2. Ophioscolex glacialis postlarval development. A, 0.5 mm dd postlarva dorsal; B, 0.9 mm dd postlarva dorsal; C, 0.9 mm postlarva ventral; D–G, 1.7 mm postlarvae; D, lateral; E, dorsal, note the irregular pattern of plates; F, arm dorsal; G, ventral, a spiniform tooth and two mouth papillae have formed; H, I, 3 mm dd juvenile ventral, note the large adoral shield spine; J, K, adult ventral. Abbreviations: ASS, adoral shield spine; DP, dental plate; OS, oral shield; others as in Fig. 1. Scale bars in millimetres.	2005-04-30	Stöhr, Sabine		Zenodo	biologists	Stöhr, Sabine			
0D0A0B06FFC1FFF461558171FD31FF48.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/5432954/files/figure.png	https://doi.org/10.5281/zenodo.5432954	Figure 3. Ophioscolex purpureus postlarval development. A–C, 0.6 mm dd postlarva; A, dorsal; B, arm dorsal; C, ventral; D, E, 0.9 mm dd postlarva; D, dorsal; E, ventral, note the leaf-shaped adoral shield spine; F, 1.5 mm dd postlarva dorsal; G, same ventral; H, 1.8 mm dd postlarva ventral; I, same dorsal. Abbreviations: CPP, central primary plate; DAP, dorsal arm plate; others as in Figs 1, 2. Scale bars in millimetres.	Figure 3. Ophioscolex purpureus postlarval development. A–C, 0.6 mm dd postlarva; A, dorsal; B, arm dorsal; C, ventral; D, E, 0.9 mm dd postlarva; D, dorsal; E, ventral, note the leaf-shaped adoral shield spine; F, 1.5 mm dd postlarva dorsal; G, same ventral; H, 1.8 mm dd postlarva ventral; I, same dorsal. Abbreviations: CPP, central primary plate; DAP, dorsal arm plate; others as in Figs 1, 2. Scale bars in millimetres.	2005-04-30	Stöhr, Sabine		Zenodo	biologists	Stöhr, Sabine			
0D0A0B06FFCAFFF562BC8423FD36FB4D.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/5432956/files/figure.png	https://doi.org/10.5281/zenodo.5432956	Figure 4. Ophiacantha anomala postlarval development, stages taken from brooding animal are termed embryo, free-living stages postlarvae. A, B, 0.6 mm dd embryo dorsal; C, 0.9 mm dd embryo dorsal; D, 1.3 mm dd embryo dorsal; E, 1.3 mm embryo ventrolateral; F, 1.6 mm dd; G, 2 mm dd postlarva ventral; H, 3 mm dd juvenile jaw. Scale bars in millimetres.	Figure 4. Ophiacantha anomala postlarval development, stages taken from brooding animal are termed embryo, free-living stages postlarvae. A, B, 0.6 mm dd embryo dorsal; C, 0.9 mm dd embryo dorsal; D, 1.3 mm dd embryo dorsal; E, 1.3 mm embryo ventrolateral; F, 1.6 mm dd; G, 2 mm dd postlarva ventral; H, 3 mm dd juvenile jaw. Scale bars in millimetres.	2005-04-30	Stöhr, Sabine		Zenodo	biologists	Stöhr, Sabine			
0D0A0B06FFCBFFF563658026FA6FFA46.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/5432958/files/figure.png	https://doi.org/10.5281/zenodo.5432958	Figure 5. Ophiolimna bairdi postlarval development. A–D, 1 mm dd postlarvae; A, dorsal; B, arm dorsal; C, arm ventral; D, ventral; E, 1.6 mm dd postlarva dorsal; F, 1.6 mm dd ventral; G, same, jaw; H, 2 mm dd postlarva. Abbreviations: BS, buccal scale; MP, mouth papilla; OP, oral plate; others as in Figs 1, 2. Scale bars in millimetres.	Figure 5. Ophiolimna bairdi postlarval development. A–D, 1 mm dd postlarvae; A, dorsal; B, arm dorsal; C, arm ventral; D, ventral; E, 1.6 mm dd postlarva dorsal; F, 1.6 mm dd ventral; G, same, jaw; H, 2 mm dd postlarva. Abbreviations: BS, buccal scale; MP, mouth papilla; OP, oral plate; others as in Figs 1, 2. Scale bars in millimetres.	2005-04-30	Stöhr, Sabine		Zenodo	biologists	Stöhr, Sabine			
0D0A0B06FFCBFFF0613080DDFF19FC45.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/5432960/files/figure.png	https://doi.org/10.5281/zenodo.5432960	Figure 6. Ophiomitrella clavigera postlarval development, specimens taken from brooding adult are termed embryo, freeliving stages postlarvae. A–C, 0.6 mm dd embryo; A, dorsal; B, arm ventral; C, jaws; D, 1 mm dd embryo dorsal; E, 1.3 mm dd embryo ventral; F, same, jaws; G, 1.5 mm dd postlarva dorsal; H, same ventral; I, 2.1 mm postlarva dorsal; J, adult ventral; K, adult arm ventral. Abbreviations: T, tooth; others as in Figs 1, 2, 5. Scale bars in millimetres.	Figure 6. Ophiomitrella clavigera postlarval development, specimens taken from brooding adult are termed embryo, freeliving stages postlarvae. A–C, 0.6 mm dd embryo; A, dorsal; B, arm ventral; C, jaws; D, 1 mm dd embryo dorsal; E, 1.3 mm dd embryo ventral; F, same, jaws; G, 1.5 mm dd postlarva dorsal; H, same ventral; I, 2.1 mm postlarva dorsal; J, adult ventral; K, adult arm ventral. Abbreviations: T, tooth; others as in Figs 1, 2, 5. Scale bars in millimetres.	2005-04-30	Stöhr, Sabine		Zenodo	biologists	Stöhr, Sabine			
0D0A0B06FFCEFFEE62E1814EFD48FB52.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/5432962/files/figure.png	https://doi.org/10.5281/zenodo.5432962	Figure 7. Ophiopleura borealis postlarval development. A, B, 0.6 mm dd postlarva; A, dorsal, note the high disc, swollen lateral arm plates and dorsal madreporite; B, ventral, note ventral hydropore at madreporite tip (between ASs); C, 0.8 mm dd postlarva dorsal, secondary inter-radial plates have formed above the radial primary plates (IR0); D, E, 1 mm dd postlarva; D, dorsal, secondary radial plates (SRP) have formed above the radial primary plates; E, ventral, the madreporite is now ventral; F, 1.2 mm dd postlarva dorsal; G, H, 1.8 mm dd postlarva; G, dorsal, secondary inter-radial plates (IR2) have formed below the first inter-radial plates (IR1); H, ventral, a second mouth papilla has formed on the dental plate; I, J, 2.6 mm dd juvenile; I, dorsal, the k-plate separates the radial shields proximally; J, ventral; K–L, 5 mm dd juvenile; K, dorsal, note the thick skin on the disc only partly removed; L, ventral; M, arm lateral, note two widely spaced short arm spines; N, arm ventral. Abbreviations: as in Figs 1–3, 5. Scale bars in millimetres.	Figure 7. Ophiopleura borealis postlarval development. A, B, 0.6 mm dd postlarva; A, dorsal, note the high disc, swollen lateral arm plates and dorsal madreporite; B, ventral, note ventral hydropore at madreporite tip (between ASs); C, 0.8 mm dd postlarva dorsal, secondary inter-radial plates have formed above the radial primary plates (IR0); D, E, 1 mm dd postlarva; D, dorsal, secondary radial plates (SRP) have formed above the radial primary plates; E, ventral, the madreporite is now ventral; F, 1.2 mm dd postlarva dorsal; G, H, 1.8 mm dd postlarva; G, dorsal, secondary inter-radial plates (IR2) have formed below the first inter-radial plates (IR1); H, ventral, a second mouth papilla has formed on the dental plate; I, J, 2.6 mm dd juvenile; I, dorsal, the k-plate separates the radial shields proximally; J, ventral; K–L, 5 mm dd juvenile; K, dorsal, note the thick skin on the disc only partly removed; L, ventral; M, arm lateral, note two widely spaced short arm spines; N, arm ventral. Abbreviations: as in Figs 1–3, 5. Scale bars in millimetres.	2005-04-30	Stöhr, Sabine		Zenodo	biologists	Stöhr, Sabine			
0D0A0B06FFCEFFEE62E1814EFD48FB52.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/5432966/files/figure.png	https://doi.org/10.5281/zenodo.5432966	Figure 9. Ophiura ophiura postlarval development. A, B, 0.3 mm dd postlarva; A, dorsal, note the flat disc; B, ventral; C, D, 0.5 mm dd postlarva; C, dorsal, note the high disc, madreporite still dorsal; D, ventral; E, F, 0.7 mm dd postlarva; E, dorsal; F, ventral; G, 1.8 mm dd postlarva dorsal, note the domed central plate (CPP); H, 4 mm dd juvenile dorsal, the central plate is only slightly domed. Abbreviations: as in Figs 1, 3. Scale bars in millimetres.	Figure 9. Ophiura ophiura postlarval development. A, B, 0.3 mm dd postlarva; A, dorsal, note the flat disc; B, ventral; C, D, 0.5 mm dd postlarva; C, dorsal, note the high disc, madreporite still dorsal; D, ventral; E, F, 0.7 mm dd postlarva; E, dorsal; F, ventral; G, 1.8 mm dd postlarva dorsal, note the domed central plate (CPP); H, 4 mm dd juvenile dorsal, the central plate is only slightly domed. Abbreviations: as in Figs 1, 3. Scale bars in millimetres.	2005-04-30	Stöhr, Sabine		Zenodo	biologists	Stöhr, Sabine			
0D0A0B06FFCEFFEE62E1814EFD48FB52.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/5432964/files/figure.png	https://doi.org/10.5281/zenodo.5432964	Figure 8. Ophiura albida postlarval development. A, B, 0.4 mm dd postlarva; A, dorsal, note the multilayered structure of the disc plates; B, ventral; C, D, 0.5 mm dd postlarva; C, dorsal; D, ventral, note the shape of the first ventral arm plate (VAP1); E, 0.7 mm dd postlarva. Abbreviations: as in Figs 1–2, 5. Scale bars in millimetres.	Figure 8. Ophiura albida postlarval development. A, B, 0.4 mm dd postlarva; A, dorsal, note the multilayered structure of the disc plates; B, ventral; C, D, 0.5 mm dd postlarva; C, dorsal; D, ventral, note the shape of the first ventral arm plate (VAP1); E, 0.7 mm dd postlarva. Abbreviations: as in Figs 1–2, 5. Scale bars in millimetres.	2005-04-30	Stöhr, Sabine		Zenodo	biologists	Stöhr, Sabine			
0D0A0B06FFCEFFEE62E1814EFD48FB52.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/5432968/files/figure.png	https://doi.org/10.5281/zenodo.5432968	Figure 10. Ophiura robusta postlarval development. A, B, 0.45 mm dd postlarvae; A, dorsal, note the structure of the plates; B, ventral, note the shape of the first ventral arm plate (VAP1); C, D, 0.55 mm dd postlarva; C, dorsal; D, ventral; E, 0.85 mm dd postlarva dorsal; F, G, 1 mm dd postlarvae; F, dorsal; G, ventral; H, I, 1.3 mm dd postlarvae; H, dorsal; I, ventral; J, K, 1.8 mm postlarvae; J, dorsal, note the heart-shaped first dorsal arm plate (DAP1); K, ventral; L, 2.9 mm dd juvenile dorsal, arm combs have formed and the DAP1 has its final heart-shape. Abbreviations: H, hydropore; k, k-plate; SIR, secondary inter-radial plate; others as in Figs 1–3, 5. Scale bars in millimetres.	Figure 10. Ophiura robusta postlarval development. A, B, 0.45 mm dd postlarvae; A, dorsal, note the structure of the plates; B, ventral, note the shape of the first ventral arm plate (VAP1); C, D, 0.55 mm dd postlarva; C, dorsal; D, ventral; E, 0.85 mm dd postlarva dorsal; F, G, 1 mm dd postlarvae; F, dorsal; G, ventral; H, I, 1.3 mm dd postlarvae; H, dorsal; I, ventral; J, K, 1.8 mm postlarvae; J, dorsal, note the heart-shaped first dorsal arm plate (DAP1); K, ventral; L, 2.9 mm dd juvenile dorsal, arm combs have formed and the DAP1 has its final heart-shape. Abbreviations: H, hydropore; k, k-plate; SIR, secondary inter-radial plate; others as in Figs 1–3, 5. Scale bars in millimetres.	2005-04-30	Stöhr, Sabine		Zenodo	biologists	Stöhr, Sabine			
0D0A0B06FFD0FFEB62B181C9FABAFDE3.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/5432970/files/figure.png	https://doi.org/10.5281/zenodo.5432970	Figure 11. Amphiura borealis postlarval development. A, B, 0.7 mm dd postlarvae; A, dorsal; B, ventral, note the infradental papillae (IP = MP2); C, D, E, 0.8 mm dd postlarvae; C, dorsal; D, ventral; E, jaw, note that the IP form on the dental plate (DP); F, G, 1.1 mm dd postlarvae; F, dorsal; G, ventral; H, I, 2 mm dd postlarva; H, dorsal, note the radial shields (RS); I, ventral, note the IP on the oral plates; J, K, 2.5 mm dd juvenile; J, arm ventral, note the hatchet-shaped spine (arrow); K, ventral. Abbreviations: as in Figs 1–3, 5. Scale bars in millimetres.	Figure 11. Amphiura borealis postlarval development. A, B, 0.7 mm dd postlarvae; A, dorsal; B, ventral, note the infradental papillae (IP = MP2); C, D, E, 0.8 mm dd postlarvae; C, dorsal; D, ventral; E, jaw, note that the IP form on the dental plate (DP); F, G, 1.1 mm dd postlarvae; F, dorsal; G, ventral; H, I, 2 mm dd postlarva; H, dorsal, note the radial shields (RS); I, ventral, note the IP on the oral plates; J, K, 2.5 mm dd juvenile; J, arm ventral, note the hatchet-shaped spine (arrow); K, ventral. Abbreviations: as in Figs 1–3, 5. Scale bars in millimetres.	2005-04-30	Stöhr, Sabine		Zenodo	biologists	Stöhr, Sabine			
0D0A0B06FFD0FFEB62B181C9FABAFDE3.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/5432956/files/figure.png	https://doi.org/10.5281/zenodo.5432956	Figure 4. Ophiacantha anomala postlarval development, stages taken from brooding animal are termed embryo, free-living stages postlarvae. A, B, 0.6 mm dd embryo dorsal; C, 0.9 mm dd embryo dorsal; D, 1.3 mm dd embryo dorsal; E, 1.3 mm embryo ventrolateral; F, 1.6 mm dd; G, 2 mm dd postlarva ventral; H, 3 mm dd juvenile jaw. Scale bars in millimetres.	Figure 4. Ophiacantha anomala postlarval development, stages taken from brooding animal are termed embryo, free-living stages postlarvae. A, B, 0.6 mm dd embryo dorsal; C, 0.9 mm dd embryo dorsal; D, 1.3 mm dd embryo dorsal; E, 1.3 mm embryo ventrolateral; F, 1.6 mm dd; G, 2 mm dd postlarva ventral; H, 3 mm dd juvenile jaw. Scale bars in millimetres.	2005-04-30	Stöhr, Sabine		Zenodo	biologists	Stöhr, Sabine			
0D0A0B06FFD0FFEB62B181C9FABAFDE3.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/5432972/files/figure.png	https://doi.org/10.5281/zenodo.5432972	Figure 12. Amphiura chiajei postlarval development. A, B, 0.4 mm dd postlarvae; A, dorsal, note the large fenestrations of the primary plates; B, ventral; C, D, 0.6 mm dd postlarvae; C, dorsal; D, ventral; E, F, 0.9 mm dd postlarva, E, dorsal, note the inter-radial plates (IR); F, ventral, note the infradental papillae (IP = MP2) on the dental plate (DP); G, H, 1.4 mm dd postlarvae; G, dorsal, note the k-plate (k); H, ventral, the adoral shield spine (ASS) has transformed into a flat scale; I, J, 2.0 mm postlarvae; I, dorsal; J, ventral, IP have moved onto oral plates; K–M, 2.4 mm dd juvenile; K, arm ventral, note the tentacle scales (TS); L, ventral; M, dorsal; N, O, 3 mm dd juvenile; N, dorsal; O, ventral. Abbreviations: as in Figs 1–3, 5. Scale bars in millimetres.	Figure 12. Amphiura chiajei postlarval development. A, B, 0.4 mm dd postlarvae; A, dorsal, note the large fenestrations of the primary plates; B, ventral; C, D, 0.6 mm dd postlarvae; C, dorsal; D, ventral; E, F, 0.9 mm dd postlarva, E, dorsal, note the inter-radial plates (IR); F, ventral, note the infradental papillae (IP = MP2) on the dental plate (DP); G, H, 1.4 mm dd postlarvae; G, dorsal, note the k-plate (k); H, ventral, the adoral shield spine (ASS) has transformed into a flat scale; I, J, 2.0 mm postlarvae; I, dorsal; J, ventral, IP have moved onto oral plates; K–M, 2.4 mm dd juvenile; K, arm ventral, note the tentacle scales (TS); L, ventral; M, dorsal; N, O, 3 mm dd juvenile; N, dorsal; O, ventral. Abbreviations: as in Figs 1–3, 5. Scale bars in millimetres.	2005-04-30	Stöhr, Sabine		Zenodo	biologists	Stöhr, Sabine			
0D0A0B06FFD0FFEB62B181C9FABAFDE3.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/5432974/files/figure.png	https://doi.org/10.5281/zenodo.5432974	Figure 13. Amphiura filiformis postlarval development. A, B, 0.35 mm dd postlarvae; A, dorsal, note the solid plate stereom; B, ventral; C, D, 0.5 mm dd postlarva; C, dorsal, note the multilayered plate margins; D, ventral; E, F, 0.6 mm dd postlarva; E, dorsal; F, ventral, note the infradental papillae (IP = MP1); G, 1 mm dd postlarva arm ventral, note the serrated middle arm spine; H, I, 1.3 mm dd postlarva; H, dorsal; I, ventral; J, K, 1.6 mm dd postlarva; J, dorsal; K, ventral; L, 5 mm dd adult. Abbreviations: as in Figs 1–3, 5. Scale bars in millimetres.	Figure 13. Amphiura filiformis postlarval development. A, B, 0.35 mm dd postlarvae; A, dorsal, note the solid plate stereom; B, ventral; C, D, 0.5 mm dd postlarva; C, dorsal, note the multilayered plate margins; D, ventral; E, F, 0.6 mm dd postlarva; E, dorsal; F, ventral, note the infradental papillae (IP = MP1); G, 1 mm dd postlarva arm ventral, note the serrated middle arm spine; H, I, 1.3 mm dd postlarva; H, dorsal; I, ventral; J, K, 1.6 mm dd postlarva; J, dorsal; K, ventral; L, 5 mm dd adult. Abbreviations: as in Figs 1–3, 5. Scale bars in millimetres.	2005-04-30	Stöhr, Sabine		Zenodo	biologists	Stöhr, Sabine			
0D0A0B06FFD5FFE661E3877BFD5BFF68.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/5432976/files/figure.png	https://doi.org/10.5281/zenodo.5432976	Figure 14. Histampica duplicata postlarval development. A, B, 1.5 mm dd postlarva; A, dorsal, note the thicker plate margins; B, ventral; C, D, 2.9 mm dd juvenile; C, dorsal; D, ventral. Abbreviations: as in Figs 1–3, 5. Scale bars in millimetres.	Figure 14. Histampica duplicata postlarval development. A, B, 1.5 mm dd postlarva; A, dorsal, note the thicker plate margins; B, ventral; C, D, 2.9 mm dd juvenile; C, dorsal; D, ventral. Abbreviations: as in Figs 1–3, 5. Scale bars in millimetres.	2005-04-30	Stöhr, Sabine		Zenodo	biologists	Stöhr, Sabine			
0D0A0B06FFD5FFE661E3877BFD5BFF68.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/5432978/files/figure.png	https://doi.org/10.5281/zenodo.5432978	Figure 15. Ophiopus arcticus postlarval development. A, B, 0.7 mm dd postlarva; A, dorsal, note the projecting madreporite; B, ventral, note the wide flat tooth (T); C, D, 0.9 mm dd postlarva; C, dorsal; D, ventral (a stray arm spine lies on a jaw); E, F, 1.3 mm dd postlarva; E, dorsal, note k-plate (k) and first inter-radials (IR1); F, ventral, note the second mouth papillae (MP2) on the dental plate; G, H, 1.4 mm dd postlarvae; G, dorsal, note the secondary inter-radial plates (SIR); H, ventral. Abbreviations: as in Figs 1–3, 5. Scale bars in millimetres.	Figure 15. Ophiopus arcticus postlarval development. A, B, 0.7 mm dd postlarva; A, dorsal, note the projecting madreporite; B, ventral, note the wide flat tooth (T); C, D, 0.9 mm dd postlarva; C, dorsal; D, ventral (a stray arm spine lies on a jaw); E, F, 1.3 mm dd postlarva; E, dorsal, note k-plate (k) and first inter-radials (IR1); F, ventral, note the second mouth papillae (MP2) on the dental plate; G, H, 1.4 mm dd postlarvae; G, dorsal, note the secondary inter-radial plates (SIR); H, ventral. Abbreviations: as in Figs 1–3, 5. Scale bars in millimetres.	2005-04-30	Stöhr, Sabine		Zenodo	biologists	Stöhr, Sabine			
0D0A0B06FFD8FFE6632B85C3FABEFCA0.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/5432980/files/figure.png	https://doi.org/10.5281/zenodo.5432980	Figure 16. Ophiothrix fragilis postlarval development. A–C, 0.34 mm dd postlarvae; A, on arm of adult; B, dorsal, note the large central plate (CPP); C, ventral, note the tricuspid tooth; D–G, 0.55 mm dd postlarvae; D, arm dorsal, note the small terminal plate (TP) and large hooks; F, arm lateral; G, ventral; H, I, 0.8 mm dd postlarvae; H, dorsal, radial shields (RS) and inter-radial plates (IR1, 2) have formed; I, ventral; J, K, 1.1 mm postlarvae; J, dorsal, note the k-plate; K, ventral, note the first tooth papillae (TPa); L–N, 1.3 mm postlarvae; L, dorsal with numerous disc spines; M, ventral with additional TPa; N, arm dorsal, note the serrated shape of the proximal dorsal spines. Abbreviations: as in Figs 1–3, 5. Scale bars in millimetres. Some dorsal plates have fallen off due to the bleaching process (H, J).	Figure 16. Ophiothrix fragilis postlarval development. A–C, 0.34 mm dd postlarvae; A, on arm of adult; B, dorsal, note the large central plate (CPP); C, ventral, note the tricuspid tooth; D–G, 0.55 mm dd postlarvae; D, arm dorsal, note the small terminal plate (TP) and large hooks; F, arm lateral; G, ventral; H, I, 0.8 mm dd postlarvae; H, dorsal, radial shields (RS) and inter-radial plates (IR1, 2) have formed; I, ventral; J, K, 1.1 mm postlarvae; J, dorsal, note the k-plate; K, ventral, note the first tooth papillae (TPa); L–N, 1.3 mm postlarvae; L, dorsal with numerous disc spines; M, ventral with additional TPa; N, arm dorsal, note the serrated shape of the proximal dorsal spines. Abbreviations: as in Figs 1–3, 5. Scale bars in millimetres. Some dorsal plates have fallen off due to the bleaching process (H, J).	2005-04-30	Stöhr, Sabine		Zenodo	biologists	Stöhr, Sabine			
0D0A0B06FFD8FFE1618D863BFC05FE84.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/5432982/files/figure.png	https://doi.org/10.5281/zenodo.5432982	Figure 17. Ophiocomina nigra postlarval development. A, B, two 0.7 mm dd postlarva dorsal, note that only one has secondary inter-radial plates (SIR); C, 0.7 mm dd postlarva ventral; D, E, 0.9 mm dd postlarvae; D, dorsal; E, ventral; F–H, 1.4 mm dd postlarvae; F, dorsal; G, arm dorsal; H, ventral; I–K, 1.6 mm dd postlarva; I, jaw, note the scale-like adoral shield spine (ASS) and the second smaller scale proximal to it; J, arm spines, note the serrated edges; K, disc granules are strongly rugose; L, 2.4 mm juvenile; M, 3 mm dd juvenile. Abbreviations: as in Figs 1–3, 10. Scale bars in millimetres.	Figure 17. Ophiocomina nigra postlarval development. A, B, two 0.7 mm dd postlarva dorsal, note that only one has secondary inter-radial plates (SIR); C, 0.7 mm dd postlarva ventral; D, E, 0.9 mm dd postlarvae; D, dorsal; E, ventral; F–H, 1.4 mm dd postlarvae; F, dorsal; G, arm dorsal; H, ventral; I–K, 1.6 mm dd postlarva; I, jaw, note the scale-like adoral shield spine (ASS) and the second smaller scale proximal to it; J, arm spines, note the serrated edges; K, disc granules are strongly rugose; L, 2.4 mm juvenile; M, 3 mm dd juvenile. Abbreviations: as in Figs 1–3, 10. Scale bars in millimetres.	2005-04-30	Stöhr, Sabine		Zenodo	biologists	Stöhr, Sabine			
