Parent taxon: Echinodermata according to S. Zamora et al. 2013
See also Beaver et al. 1967, Sepkoski 2002 and Zamora and Alvaro 2010
Sister taxa: Argonevis, Aspidocrinites, Blastozoa, Camptostromoidea, Carpoidea, Corneotuba, Cornuvacites, Crinozoa, Ctenocystoidea, Ctenoimbricata, Cyclocystoidea, Echinosphaera, Edrioasteroidea, Eleutherozoa, Erinea, Fanerocoelia, Helicocystitidae, Helicoplacoidea, Homalozoa, Iheringiana, Limolepis, Nemotapis, Paracrinozoa, Pediculacaudinidae, Pelmatozoa, Radimonis, Scoteinocystis, Scutellidae, Scutellinidae, Stylophora, Tubocaudinidae, Venerella
Subtaxa: Davidocinctus Gyrocystidae Rozanovicystidae Sucocystidae Trochocystitidae
Distribution:
• Cambrian of Czechia (6 collections), France (14), Germany (1), Morocco (3), Spain (31), the United Kingdom (1)
• Solvan of Spain (2)
• Amgan of Czechia (3), the Russian Federation (1)
Total: 62 collections including 76 occurrences