Gastropoda - Euomphalina - Anomphalidae
Full reference: J. S. Peel. 1984. Autecology and systematics of a new Silurian anomphalid gastropod from western Greenland. Rapport Grønlands Geologiske Undersøgelse 121(1):77-87
Parent taxon: Anomphalidae according to J. S. Peel 1984
Sister taxa: Anomphalus, Bolicharewia, Delphinuella, Diploconula, Givediscus, Isonema, Littorella, Nodinella, Tychonia
Subtaxa: Isfarispira Pycnomphalus Pycnotrochus Turbocheilus
Type: Pycnomphalus
Ecology: epifaunal detritivore
Distribution:
• Eocene of United States (1: New Jersey collection)
• Devonian of the Czech Republic (1)
• Silurian of Canada (6: Nunavut, Ontario), China (3), the Czech Republic (6), Greenland (3), Sweden (6), Tajikistan (2), the United Kingdom (2), United States (1: Wisconsin)
• Ordovician of Canada (1: Nunavut)
Total: 32 collections including 42 occurrences