Endoxocrinus A.H. Clark, 1908

David, Jerome, Roux, Michel, Messing, Charles G. & Ameziane, Nadia, 2006, Revision of the pentacrinid stalked crinoids of the genus Endoxocrinus (Echinodermata, Crinoidea), with a study of environmental control of characters and its consequences for taxonomy, Zootaxa 1156, pp. 1-50 : 32

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151 ; Diplocrinus Döderlein, 1912: 21 ; Annacrinus A.H. Clark, 1923: 11 ; Diplocrinus sensu lato Roux, 1978 : A9 (unpublished data) and 1981: 481.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 .