• Actiniaria
• Actinulida
• Alcyonacea accepted as Octocorallia
• Anthoathecata
• Anthoathecatae accepted as Anthoathecata
• Anthomedusae represented as Anthoathecata
• Antipatharia
• Athecata accepted as Anthoathecata
• Auloporida †
• Auloporida †
• Bivalvulida
• Calyptoblastina † accepted as Leptothecata
• Carybdeida
• Ceriantharia
• Ceriantipatharia (unaccepted > nomen nudum)
• Chirodropida
• Chondrophora † accepted as Porpitidae Goldfuss, 1818
• Conulatae †
• Corallimorpharia
• Coralliomorpharia accepted as Corallimorpharia
• Coronatae
• Favositida †
• Gorgonacea accepted as Octocorallia
• Gymnoblastea accepted as Anthoathecata
• Halysitida †
• Heliolitida †
• Helioporacea accepted as Helioporidae Moseley, 1876
• Heterocorallia †
• Hexanthiniaria †
• Hydroida accepted as Hydroidolina
• Kilbuchophyllida †
• Laingiomedusae accepted as Anthoathecata
• Lemniscaterina †
• Leptomedusae represented as Leptothecata
• Leptothecata
• Lichenariida †
• Limnomedusae
• Madreporaria accepted as Scleractinia
• Malacalcyonacea
• Malacovalvulida
• Milleporina accepted as Hydroidolina
• Multivalvulida
• Narcomedusae
• Octocorallia incertae sedis (temporary name)
• Pennatulacea accepted as Pennatuloidea Ehrenberg, 1834
• Polypodiidea
• Pterocorallia †
• Ptychodactiaria accepted as Actiniaria
• Rhizostomeae
• Rugosa incertae sedis † (temporary name)
• Sarcinulida †
• Scleractinia
• Scleralcyonacea
• Semaeostomeae
• Siphonophora accepted as Siphonophorae
• Siphonophorae
• Stauriida †
• Stauromedusae
• Stereolasmatina †
• Syringoporida †
• Tabulata incertae sedis † (temporary name)
• Tetradiida
• Thecaphora accepted as Leptothecata
• Thecata accepted as Leptothecata
• Trachomedusae accepted as Trachymedusae
• Trachylina accepted as Trachylinae
• Trachymedusae
• Zoantharia
• Zoanthidea accepted as Zoantharia
• Zoanthiniaria accepted as Zoantharia