Retusa (Coleophysis) Fischer 1883 (snail)
Gastropoda - Opisthobranchia - Retusidae
Alternative spellings: Coelophysis, Coleophysis
Parent taxon: Retusa according to J.-M. Pacaud and J. Le Renard 1995
See also Hendy 2007, Itoigawa and Ogawa 1973 and Oldroyd 1925
Sister taxa: Retusa (Cylichnina), Retusa bizona, Retusa claibornensis, Retusa galba, Retusa jacksonensis, Retusa jacksonesis, Retusa obtusa, Retusa recta, Retusa truncatula, Retusa yaquensis
Subtaxa: none
Ecology: epifaunal carnivore
Distribution:
• Quaternary of Greenland (1 collection), Japan (1), United States (2: California)
Total: 4 collections including 5 occurrences