Gastropoda - Bellerophontida - Tropidodiscidae
Alternative spelling: Tropidodiscinae
Full reference: J. B. Knight. 1956. New families of Gastropoda. Journal of the Washington Academy of Sciences 46(2):41-42
Parent taxon: Tropidodiscoidea according to P. J. Wagner 2023
See also Bouchet et al. 2005, Bouchet et al. 2017, Cook 1998, Ebbestad and Yochelson 2000, Golikov and Starobogatov 1975, Horný 1963, Knight et al. 1960, Rohr et al. 2003 and Wahlman 1992
Sister taxa: none
Subtaxa: Groomodiscus Kosorodiscus Neimongolidiscus Nylanderina Sinuitina Spirilira Temnodiscinae Tropidodiscus Vorticina Westraliadiscus Zonidiscus
Type: Tropidodiscus
Ecology: slow-moving low-level epifaunal detritivore
Distribution:
• Permian of Argentina (1 collection), China (2), India (1), Pakistan (11), United States (1: Texas)
• Carboniferous of Argentina (1), Australia (10), Belgium (2), China (1), Morocco (1), United States (23: Arkansas, California, Indiana, Kentucky, Missouri, Ohio, Oklahoma, Texas, Utah, Virginia)
• Givetian of France (2)
• Devonian of Australia (17), Austria (10), Brazil (1), Canada (2: Ontario, Quebec), China (2), the Czech Republic (5), France (1), Germany (2), Japan (1), Kazakhstan (9), Luxembourg (3), Morocco (3), South Africa (1), the United Kingdom (2), United States (28: Illinois, Maine, Michigan, Nevada, New York, Ohio), Vietnam (1)
• Silurian of Australia (2), Canada (3: Nova Scotia, Québec), the Czech Republic (6), France (1), Mexico (3), the Russian Federation (1), Sweden (3), the United Kingdom (5), United States (3: Indiana, Ohio, Tennessee)
• Dobrotivian of the Czech Republic (1), France (2), Spain (4)
• Whiterockian of United States (3: Nevada)
• Fennian of France (1)
• Arenig of Argentina (1), Australia (1), Bolivia (1), France (2), United States (3: Montana, Nevada)
• Klabava of the Czech Republic (1)
• Arenigian of United States (1: Utah)
• Ordovician of Argentina (2), Bolivia (1), Canada (7: Alberta, British Columbia, Ontario, Quebec), China (11), the Czech Republic (9), Estonia (2), France (4), Iran (1), Morocco (4), Norway (6), the Russian Federation (2), Spain (3), Sweden (4), the United Kingdom (14), United States (25: Alaska, California, Iowa, Kentucky, Missouri, New York, North Dakota, Ohio, Texas, Vermont, Virginia)
• Cressagian of the United Kingdom (1)
• Tremadoc of Argentina (6), Bolivia (2), China (1), Colombia (1), France (5), Mexico (2)
• Skullrockian of Canada (1: British Columbia)
• Cambrian of Antarctica (2), Argentina (2), Canada (1: Quebec), China (1), United States (7: Colorado, Minnesota, Missouri, New York)
Total: 319 collections including 354 occurrences