Edrioasteroidea - Hemicystitidae

Full reference: D. W. Fisher. 1951. A New Edrioasteroid from the Middle Ordovician of New York. Journal of Paleontology 25(5):691-693

Belongs to Bassleridiscus according to D. W. Fisher 1951

Sister taxa: none

Type specimen: Its type locality is Manny Corners Quarry, which is in a Blackriveran carbonate limestone in the Amsterdam Formation of New York

Ecology: stationary low-level epifaunal suspension feeder

Average measurements (in mm): whole body width 15.0