Full reference: E. Koken. 1896. Die Leitfossilien. Ein Handbuch für den Unterricht und für das Bestimmen von Versteinerungen 1-848
Parent taxon: Euomphalina according to P. J. Wagner 1999
Sister taxa: Anomphaloidea, Bridegeites, Craspedostomatoidea, Euomphaloidea, Macluritoidea, Offlyeotrochus, Omphalotrochoidea, Ophiletoidea, Oriostomatoidea, Palaeotrochoidea, Platyceratoidea, Pseudophoroidea, Triassocirrus
Subtaxa: Raphistomatidae
Type: Raphistoma
Ecology: stationary epifaunal suspension feeder
Distribution:
• Devonian of Canada (1: Northwest Territories collection)
• Silurian of Ukraine (2)
• Ordovician of Australia (1), Canada (14: Alberta, British Columbia, Newfoundland, Quebec, Yukon), China (2), Germany (1), Greenland (4), Malaysia (4), Morocco (2), North Korea (3), the Russian Federation (2), South Korea (1), Svalbard and Jan Mayen (4), the United Kingdom (5), United States (72: Alabama, Alaska, Arkansas, Georgia, Illinois, Iowa, Indiana, Kentucky, Minnesota, Missouri, Montana, Nevada, New Mexico, New York, North Dakota, Ohio, Oklahoma, Tennessee, Texas, Utah, Vermont, Virginia)
• Llandeilo of South Korea (1)
• Chazy of Canada (15: Ontario, Quebec), United States (31: New York, Vermont)
• Whiterockian of Canada (2: Newfoundland and Labrador), United States (6: Nevada)
• Arenig of China (4), Greenland (1), United States (1: Montana)
• Arenigian of United States (1: Virginia)
• Dawan of China (1)
• Cassinian of Canada (12: Newfoundland and Labrador, Ontario, Quebec), Greenland (1), United States (51: Arkansas, Minnesota, Missouri, Vermont, Virginia)
• Canadian of Canada (1: Nunavut), United States (2: Maryland)
• Jeffersonian of Canada (1: Newfoundland), United States (6: Oklahoma, Texas)
• Jefferson of United States (5: Missouri)
Total: 260 collections including 332 occurrences