Parent taxon: Cnidaria according to E. Kayal et al. 2013
See also Edwards 1988, López-Pérez 2005, Sepkoski 2002, Squires 1984, Squires 1987, Squires 1988 and Squires 1999
Sister taxa: Cloudinidae, Conulata, Cordilites, Crassitubus, Cyclozoa, Erniettamorpha, Escumasia, Haootia, Hydroconozoa, Kimberia, Liaoningia, Medusae, Medusozoa, Melanofurcata, Melanosteus, Melanostylus, Myxozoa, Namacalathus, Olivooidae, Priscapennamarina, Quadratitubus, Ramellina, Ramitubus, Scyphozoa, Sinocyclocyclicus, Spatangopsis, Syringophyllum, Vauzutsubua, Xianguangia, Zolotytsia
Subtaxa: Actiniae Actiniaria Actinotheca Antipatharia Archaeotrypa Cambrophyllum Cambrotrypa Cothonion Cysticyathus Decaphyllum Hexacorallia Kitakamiphyllum Lipopora Numidiaphyllum Octocorallia Oekentorpia Pennatulacea Protoaulopora Pyxidophyllum Roselletona Rugosa Spongarium Stolonifera Strobilasma Tabulata Zoantharia
Ecology: stationary intermediate-level epifaunal microcarnivore