Full reference: R. A. Robison and J. Sprinkle. 1969. Ctenocystoidea: new class of primitive echinoderms. Science 166:1512-1514
Parent taxon: Echinodermata according to R. A. Robison and J. Sprinkle 1969
See also Rahman et al. 2015 and Sepkoski 2002
Sister taxa: Argonevis, Aspidocrinites, Blastozoa, Camptostromoidea, Carpoidea, Cincta, Corneotuba, Cornuvacites, Crinozoa, Ctenoimbricata, Cyclocystoidea, Echinosphaera, Edrioasteroidea, Eleutherozoa, Erinea, Fanerocoelia, Helicocystitidae, Helicoplacoidea, Homalozoa, Iheringiana, Limolepis, Nemotapis, Paracrinozoa, Pediculacaudinidae, Pelmatozoa, Radimonis, Scoteinocystis, Scutellidae, Scutellinidae, Stylophora, Tubocaudinidae, Venerella
Subtaxa: Conollia Ctenocystoida Etoctenocystis Jugoszoviidae
Ecology: epifaunal
Distribution:
• Ordovician of the United Kingdom (1 collection)
• Cambrian of Australia (1), the Czech Republic (9), France (3), Poland (2), Spain (1), United States (1: Utah)
• Amgan of the Czech Republic (1), Poland (1)
• Delamaran of United States (5: Idaho, Utah)
Total: 25 collections including 30 occurrences