†class Stylophora Gill and Caster 1960
Parent taxon: Echinodermata according to B. Lefebvre 2000
See also Beaver et al. 1967 and Sepkoski 2002
Sister taxa: Argonevis, Aspidocrinites, Blastozoa, Camptostromoidea, Carpoidea, Cincta, Corneotuba, Cornuvacites, Crinozoa, Ctenocystoidea, Ctenoimbricata, Cyclocystoidea, Echinosphaera, Edrioasteroidea, Eleutherozoa, Erinea, Fanerocoelia, Helicocystitidae, Helicoplacoidea, Homalozoa, Iheringiana, Limolepis, Nemotapis, Paracrinozoa, Pediculacaudinidae, Pelmatozoa, Radimonis, Scoteinocystis, Scutellidae, Scutellinidae, Tubocaudinidae, Venerella
Subtaxa: Ankyroida Cornuta Mitrata Reticulocarpidae
Ecology: facultatively mobile low-level epifaunal suspension feeder