Kier (1962) provided a new and detailed description of the type species which led him to synonymize this genus with Proterocidaris. It differs from the type species of Proterocidaris, however, in having a much less marked change in the width of ambulacral zones between oral and aboral surfaces, and in having interambulacral zones reduced to a single column adorally that ends well before the peristome. This seems sufficient to merit retaining the two as separate genera.
Kier, P. M. 1962. Redescription of some Lower Carboniferous echinoids from Belgium. Institut royal des Sciences naturelles de Belgique, Bulletin 38(5), 1-12, pls 1-6.