Endoxocrinus A.H. Clark, 1908
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https://doi.org/10.5281/zenodo.172265 |
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https://doi.org/10.5281/zenodo.6260983 |
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persistent identifier |
https://treatment.plazi.org/id/467B4160-FF8D-FB7D-FE96-6E475932021E |
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Plazi |
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scientific name |
Endoxocrinus A.H. Clark, 1908 |
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Genus Endoxocrinus A.H. Clark, 1908
Type species of the genus: Encrinus parrae Gervais (in Guerin, 1835).
Synonymy: Endoxocrinus Clark, 1908b: 151 ; Diplocrinus Döderlein, 1912: 21 ; Annacrinus A.H. Clark, 1923: 11 ; Diplocrinus sensu lato Roux, 1978 : A9 (unpublished data) and 1981: 481.
Emended diagnosis
A diplocrinine genus with Br1+2 of each brachitaxis united by synostosis tending to syzygy; IBr2ax; IIBr to VBr series of 1 to 5 brachials, usually 2 (98%) in IIBr, 2 or 3 beyond IIBrax, exceptionally up to 7 in IIIBr to VBr; end of arms with rudimentary pinnules < 1 cm long; arm branching usually endotomous; relatively short stalk (ratio of stalk length to crown length usually <2, frequently <1.2) sometimes with a callus on the distalmost infranodal facet; mature symplexies and cryptosymplexies without interpetaloid groove, and symplexial crenularium with usually 6–8 (up to 10 in largest columnals) major culmina per interpetaloid zone.
Included species
Encrinus parrae Gervais ( in Guérin, 1835); Pentacrinus alternicirrus Carpenter, 1882 ; Pentacrinus maclearanus Thomson, 1877 ; Pentacrinus wyvillethomsoni Jeffreys, 1870 .
No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.
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Diplocrininae |
Endoxocrinus A.H. Clark, 1908
| David, Jerome, Roux, Michel, Messing, Charles G. & Ameziane, Nadia 2006 |
Pentacrinus alternicirrus
| Carpenter 1882 |
Pentacrinus maclearanus
| Thomson 1877 |
Pentacrinus wyvillethomsoni
| Jeffreys 1870 |