†superfamily Tercyathoidea Vologdin 1939 (archaeocyath sponge)
Parent taxon: Ajacicyathina according to F. Debrenne et al. 2015
Sister taxa: Annulocyathoidea, Bronchocyathoidea, Erbocyathoidea, Ethmophylloidea, Lenocyathoidea, Pretiosocyathoidea, Sigmocyathoidea, Tumulocyathoidea
Subtaxa: Botomocyathidae Olgaecyathidae Piamaecyathellidae Tercyathidae
Type: Tercyathus
Ecology: stationary intermediate-level epifaunal suspension feeder
Distribution:
• Cambrian of Antarctica (1 collection), the Russian Federation (22)
Total: 23 collections including 51 occurrences