†superfamily Omalogyroidea Sars 1878 (snail)
Parent taxon: Heterobranchia according to J. A. Todd 2001
See also Beesley 1998
Sister taxa: Diaphanoidea, Doridoidea, Kuskokwimiidae
Subtaxa: Omalogyridae
Ecology: epifaunal carnivore
Distribution:
• Quaternary of Antarctica (1 collection), Argentina (1)
• Miocene of France (1)
• Oligocene of Germany (1)
• Eocene of United States (1: Washington)
• Jurassic of Germany (2)
Total: 7 collections including 8 occurrences