Gastropoda - Euomphalina - Omphalotrochidae
Full reference: J. B. Knight. 1945. Some new genera of Paleozoic Gastropoda. Journal of Paleontology 19(6):573-587
Parent taxon: Euomphaloidea according to P. Bouchet et al. 2005
See also Golikov and Starobogatov 1975, Gubanov et al. 1995, Jeffery 2003, Knight et al. 1960, Kosnik 2002, Linsley and Kier 1984 and Morris and Cleevely 1981
Sister taxa: Anomphalidae, Elasmonematidae, Euomphalidae, Helicotomidae, Holopeidae, Kitikamispira, Lesueurillidae, Microdomatidae, Neoplatyteichum, Nettersheimia, Omphalocirridae, Omphalocirrinae, Ornollus, Planitrochidae, Pseudophoridae, Pycnomphalidae, Rhenomphalus, Serpulospira, Tychobraheidae
Subtaxa: Arastra Archaeosphera Babylonites Bassotrochus Cinclidonema Coronopsis Fujispira Labrocuspis Omphalotrochus Orecopia Sylvestria Trochonemopsis
Ecology: stationary epifaunal suspension feeder
Distribution:
• Permian of Argentina (1 collection), Bolivia (4), Canada (1: British Columbia), China (1), Indonesia (1), Mexico (7), New Zealand (3), Peru (7), the Russian Federation (5), Svalbard and Jan Mayen (2), Thailand (1), Tunisia (1), United States (123: Arizona, California, Idaho, Kansas, Montana, Nevada, New Mexico, Oklahoma, Texas, Utah, Wyoming)
• Carboniferous of Morocco (2), Peru (1), the Russian Federation (2), United States (3: New Mexico, Texas)
• Devonian of Australia (12), Canada (3: British columbia, Northwest Territories, Ontario), Germany (2), Japan (1), New Zealand (1), Poland (4), United States (11: Alaska, Arizona, California, Iowa, Nevada, Ohio)
Total: 199 collections including 223 occurrences