Crinoidea - Dendrocrinida - Pirasocrinidae

Full reference: R. C. Moore and H. L. Strimple. 1973. Lower Pennsylvanian (Morrowan) crinoids from Arkansas, Oklahoma, and Texas. University of Kansas Paleontological Contributions, Echinodermata Article 60(12):1-84

Belongs to Lasanocrinus according to R. C. Moore and H. L. Strimple 1973

Sister taxa: Lasanocrinus daileyi, Lasanocrinus minutus, Lasanocrinus multinodulus, Lasanocrinus strigosus

Type specimen: SUI 33176 (dorsal cup). Its type locality is Greenleaf Lake Spillway (Loc. 8), which is in a Morrowan marine limestone/shale in the Bloyd Formation of Oklahoma.

Ecology: stationary intermediate-level epifaunal suspension feeder

Average measurements (in mm): dorsal cup 4.00 x 12.00