Full reference: D. W. Boyd and N.D. Newell. 1968. Hinge grades in the evolution of crassatellacean bivalves as revealed by Permian genera. American Museum Novitates 2328:1-52
Parent taxon: Actinodontida according to J. G. Carter et al. 2011
Sister taxa: Actinodontoidea, Amnigenioidea, Anodontopsoidea, Cycloconchoidea, Nyassoidea, Palaeomuteloidea
Subtaxa: Crassatellopsidae Oriocrassatellidae
Ecology: facultatively mobile infaunal suspension feeder
Distribution:
• Permian of Afghanistan (1 collection), Australia (14), China (2), Greenland (1), India (2), Indonesia (1), Oman (1), Pakistan (1), the Russian Federation (13), Svalbard and Jan Mayen (1), United States (2: Wyoming)
• Carboniferous of Argentina (1), Australia (4), Brazil (1), United States (2: Arizona)
• Devonian of Australia (1), China (1), Germany (1)
Total: 50 collections including 56 occurrences