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)
• Whiterockian of Canada (2: Newfoundland and Labrador), United States (7: Alaska, Nevada)
• Chazyan of Canada (22: Ontario, Quebec), United States (33: Alabama, New York, Tennessee, Vermont)
• Fennian of Malaysia (4)
• Arenig of China (4), Greenland (1), United States (1: Montana)
• Arenigian of United States (1: Virginia)
• Dawan of China (1)
• Ordovician of Australia (1), Canada (21: Alberta, British Columbia, Newfoundland, Newfoundland and Labrador, Ontario, Quebec, Yukon), China (1), Germany (1), Greenland (5), Morocco (2), North Korea (3), the Russian Federation (2), South Korea (2), Svalbard and Jan Mayen (4), the United Kingdom (5), United States (131: Alaska, Arkansas, Georgia, Illinois, Iowa, Indiana, Kentucky, Minnesota, Missouri, Montana, Nevada, New Mexico, New York, North Dakota, Ohio, Oklahoma, Tennessee, Texas, Utah, Vermont, Virginia)
• Canadian of Canada (1: Nunavut), United States (2: Maryland)
• Tremadoc of China (1)
Total: 261 collections including 333 occurrences