†family Hetairacyathidae Bedford and Bedford 1937
Radiocyatha - Hetairacyathidae
Parent taxon: Radiocyatha according to P. D. Kruse et al. 2015
See also Finks et al. 2004
Sister taxa: Acanthinocyathida, Soanitidae, Uranosphaeridae
Subtaxa: Blastasteria Girphanovella Gonamispongia Radiocyathus
Type: Radiocyathus
Distribution:
• Cambrian of Antarctica (1 collection), Australia (3), Mongolia (5), the Russian Federation (3)
Total: 12 collections each including a single occurrence