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: Cambroctoconus, Cambrorhytium, Crassitubus, Erniettamorpha, Escumasia, Haootia, Hydroconozoa, Kimberia, Liaoningia, Medusae, Medusozoa, Melanofurcata, Melanosteus, Melanostylus, Myxozoa, Priscapennamarina, Quadratitubus, Ramellina, Ramitubus, Sinocyclocyclicus, Spatangopsis, Syringophyllum, Thaumoptilon, Vauzutsubua, Xianguangia, Zolotytsia
Subtaxa: Actiniae Actinotheca Cambrotrypa Conularia kaibabensis Cysticyathus Decaphyllum Hexacorallia Kitakamiphyllum Numidiaphyllum Octocorallia Oekentorpia Paiutiida Pyxidophyllum Roselletona Spongarium Stolonifera Strobilasma Tablulaconida Tabulata Zoantharia
Ecology: stationary intermediate-level epifaunal microcarnivore