†superfamily Pretiosocyathoidea Rozanov 1969 (archaeocyath sponge)
Parent taxon: Ajacicyathina according to F. Debrenne et al. 2015
Sister taxa: Annulocyathoidea, Bronchocyathoidea, Erbocyathoidea, Ethmophylloidea, Lenocyathoidea, Sigmocyathoidea, Tercyathoidea, Tumulocyathoidea
Subtaxa: Pretiosocyathidae Robertocyathidae
Type: Pretiosocyathus
Ecology: stationary intermediate-level epifaunal suspension feeder
Distribution:
• Cambrian of Australia (1 collection), Mongolia (2), the Russian Federation (19)
Total: 22 collections including 28 occurrences