Family Neomphalidae McLean 1981 (snail)
Gastropoda - Neomphalida - Neomphalidae
Synonym: Cyathermiidae McLean 1990
Parent taxon: Neomphaloidea according to P. Bouchet et al. 2005
See also Kaim et al. 2014
Sister taxa: Melanodrymiidae, Peltospiridae
Subtaxa: Cyathermia Leptogyra Lithomphalus Neomphalus Retiskenea
Ecology: epifaunal
Distribution:
• Oligocene of United States (2: Washington collections)
• Eocene to Oligocene of United States (1: Washington)
• Eocene of United States (3: Washington)
• Cretaceous of Gabon (3), New Zealand (1), United States (5: California)
• Jurassic of United States (1: California)
Total: 16 collections including 19 occurrences