Subgenus Diplocrinus Döderlein, 1912

Type species of the subgenus: Pentacrinus maclearanus Thomson, 1872 b.

Synomymy: Cenocrinus (Diplocrinus) Döderlein, 1912: 21; Diplocrinus A.H. Clark, 1923: 11; Diplocrinus (Diplocrinus) Roux, 1977: 64; Endoxocrinus (Diplocrinus) David, 1998: 202 (unpublished data) and Roux et al., 2002: 820.

Emended diagnosis

A subgenus of Endoxocrinus with Br2ax in all brachitaxes, very rarely Br1ax or Br3ax; number of internodals per mature noditaxis strongly variable; usually distal callus at stalk end; number of cirrals per cirrus 19–35 (mode usually <30), each cirral relatively long (usually> 1.1 mm); orientation of proximal cirri variable.

Included species

Pentacrinus alternicirrus Carpenter, 1882 (= Isocrinus sibogae Döderlein, 1907); Pentacrinus maclearanus Thomson, 1878; Pentacrinus wyvillethomsoni Jeffreys, 1870 .