Gastropoda - Bellerophontida - Bellerophontidae
Full reference: G.P. Wahlman. 1992. Middle and Upper Ordovician symmetrical univalved mollusks (Monoplacophora and Bellerophontina) of the Cincinnati Arch region. United States Geological Survey Professional Paper 1066(O):1-123
Parent taxon: Bellerophontidae according to P. Bouchet et al. 2017
See also Bouchet et al. 2005 and Wahlman 1992
Sister taxa: Bellerophontinae, Cymbulariinae, Dicellonema, Knightitinae, Sorobanobaca, Teutonophon, Yochelsonellisa
Subtaxa: Bucanopsis Sphenosphaera
Ecology: slow-moving low-level epifaunal detritivore
Distribution:
• Permian of China (1 collection)
• Carboniferous of China (1), the United Kingdom (20), United States (6: Alaska, Arizona, Iowa, Kansas, Texas)
• Devonian of Canada (1: Manitoba), United States (4: New York, Pennsylvania)
• Silurian of Australia (1), Canada (4: Nova Scotia, Ontario), Sweden (3), the United Kingdom (2), United States (7: Alaska, New York, Ohio)
• Letna of the Czech Republic (1)
• Ordovician of Canada (8: Nunavut, Ontario, Quebec), the Czech Republic (2), the United Kingdom (4), United States (82: Illinois, Illinois, Iowa, Indiana, Iowa, Kentucky, Minnesota, Missouri, Ohio, Tennessee)
Total: 147 collections including 181 occurrences