Parent taxon: Vetigastropoda according to K. Bandel 2009
Sister taxa: Amberleyoidea, Angarioidea, Blodgettella, Cirroidea, Crosseolidae, Frydatinus, Jurassiphorus, Lepetellida, Microdomatoidea, Nodoconus, Pendromidae, Pleurotomariida, Pleurotomarioidea, Purkynespira, Schizogonioidea, Seguenziida, Seguenzioidea, Selenimorpha, Trochina, Trochoidea, Turbinoidea
Subtaxa: Ptychomphalidae
Ecology: epifaunal grazer
Distribution:
• Jurassic of France (6 collections), Germany (8), Greenland (22), Hungary (4), Italy (1), Luxembourg (9), Portugal (4), Spain (2), Turkey (1), the United Kingdom (9)
• Triassic of Austria (2), Chile (1), France (1), Italy (4), Turkey (1), United States (1: Idaho)
• Permian of Laos (1)
• Carboniferous of the United Kingdom (6), United States (1: Utah)
Total: 84 collections including 96 occurrences