Parent taxon: Ajacicyathina according to F. Debrenne et al. 2015
See also Kerner et al. 2011
Sister taxa: Annulocyathoidea, Bronchocyathoidea, Erbocyathoidea, Lenocyathoidea, Pretiosocyathoidea, Sigmocyathoidea, Tercyathoidea, Tumulocyathoidea
Subtaxa: Carinacyathidae Ethmophyllidae Fallocyathidae Gloriosocyathidae Kijacyathidae
Ecology: stationary intermediate-level epifaunal suspension feeder
Distribution:
• Cambrian of Antarctica (1 collection), Canada (21: British Columbia, Northwest Territories, Yukon), China (1), Falkland Islands (Malvinas) (1), Italy (3), Kazakhstan (1), Kyrgyzstan (1), Mexico (7), Mongolia (3), Morocco (1), the Russian Federation (47), Spain (4), United States (9: California, Nevada, New Jersey, Virginia)
Total: 100 collections including 170 occurrences