Infraorder Urechinina Clark 1946 (sea urchin)
Full reference: H. L. Clark. 1946. The echinoderm fauna of Australia: Its composition and its origin. Publications Carnegie Institute Washington 566:1-567
Parent taxon: Meridosternata according to A. Kroh and A. B. Smith 2010
Sister taxa: Cardiasterina, Echinocorythidae, Holasteridae
Subtaxa: Carnarechinidae Plexechinidae Pourtalesiidae Urechinidae
Ecology: semi-infaunal detritivore
Distribution: found only at "Cervantes", San José de las Lajas (Miocene to Miocene of Cuba)