Carpocrinus simplex, from Akiyasu Shimizu.
Belongs within: Compsocrinina.

The Carpocrinidae are a group of crinoids with simple arms known from the Middle Silurian to the Middle Devonian (Ubaghs 1978).

Characters (from Ubaghs 1978): Fixed secundibrachs one to three in each half-ray, exceptionally more; interprimibrachs one to many, connecting with or separated from tegmen; CD interray primitively and typically with median series of anal plates. Tegmen solid, with orals and ambulacrals ordinarily distinct. Free arms simple, usually two in each ray, uniserial or biserial; brachials simple or compound. Column cylindrical.

<==Carpocrinidae [Barrandeocrinidae, Carpocrinidées, Carpocriniens, Desmidocrinidae, Habrocrinidae, Methabocrinidae]
|–Acacocrinus Wachsmuth & Springer 1897 U78
|    `–*A. elrodi Wachsmuth & Springer 1897 U78
|–Barrandeocrinus Angelin 1878 U78
|    `–*B. sceptrum Angelin 1878 U78
|–Methabocrinus Jaekel 1918 U78
|    `–*M. erraticus Jaekel 1918 U78
|–Bohemicocrinus Waagen & Jahn 1899 [=Bohemiocrinus (l. c.); incl. Vletavicrinus Waagen & Jahn 1899] U78
|    `–*B. pulverens Waagen & Jahn 1899 [incl. *Vletavicrinus haueri Waagen & Jahn 1899] U78
|–Cyclicocrinus Miller 1892 U78
|    `–*C. canaliculatus Miller 1892 U78
|–Desmidocrinus Angelin 1878 U78
|    `–*D. pentadactylus Angelin 1878 U78
`–Carpocrinus Müller 1840 (see below for synonymy) U78
|–*C. simplex (Phillips in Murchison 1839) (see below for synonymy) U78
|–C. ornatus U78
|–‘*Pionocrinus’ pulchellus Angelin 1878 U78
`–‘*Leptocrinus’ raridigitatus Angelin 1878 U78

Carpocrinus Müller 1840 [=Abracrinus d’Orbigny 1850, Habrocrinus Angelin 1878, Carpiocrinus (l. c.), Carpocrinites Geinitz 1846, Phoenicocrinites Austin & Austin 1843, Phoenicocrinus Springer 1913; incl. Leptocrinus Angelin 1878, Pionocrinus Angelin 1878] U78

*Carpocrinus simplex (Phillips in Murchison 1839) [=Actinocrinites simplex, *Abracrinus simplex, *Carpocrinites simplex, *Habrocrinus simplex, *Phoenicocrinites simplex, *Phoenicocrinus simplex] U78

*Type species of generic name indicated


[U78] Ubaghs, G. 1978. Camerata. In: Moore, R. C., & C. Teichert (eds) Treatise on Invertebrate Paleontology pt T. Echinodermata 2. Crinoidea vol. 2 pp. T408–T519. The Geological Society of America, Inc.: Boulder (Colorado), and The University of Kansas: Lawrence (Kansas).

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