Superfamily Helicinoidea Férussac 1822 (snail)
Parent taxon: Cycloneritimorpha according to P. Bouchet et al. 2005
Sister taxa: Hydrocenoidea, Naticopsoidea, Neritoina, Symmetrocapuloidea
Subtaxa: Dawsonellidae Deianiridae Helicinidae Neritiliidae Proserpinellidae Proserpinidae
Type: Helicinidae
Ecology: epifaunal
Distribution:
• Quaternary of United States (4: Michigan, Texas, Virginia collections)
• Miocene of Austria (5), Germany (1), Hungary (1), the Marshall Islands (1), the Philippines (1), United States (1: Montana)
• Oligocene to Miocene of United States (5: Florida, Montana)
• Eocene of France (3), United States (1: California)
Total: 23 collections including 25 occurrences