Mammalia - Rodentia - Castoridae
Alternative spelling: Castoroididae
Parent taxon: Castoridae according to W. W. Korth 2008
See also Flower and Lydekker 1891, Hay 1902, Korth 2007, Korth 2007, Korth 2017, Korth 2002, Korth and Bailey 2006 and Rybczynski 2007
Sister taxa: Agnotocastor, Agnotocastorinae, Anchitheriomyinae, Anchitheriomys, Asiacastor, Boreofiber, Capatanka, Castorinae, Chalicomys, Eocastoroides, Euroxenomys, Migmacastor, Montanacastor, Palaeocastorinae, Palaeomys, Romanocastor, Trigontherium, Trogontheriinae, Trogontherium, Youngofiber, Zamolxifiber
Subtaxa: Castoroidini Hystricopini Nothodipoidini Procastoroides Trogontheriini
Type: Castoroides
Ecology: amphibious browser
Distribution:
• Quaternary of Canada (9: New Brunswick, Ontario, Yukon collections), United States (144: Alabama, Alaska, Arkansas, Florida, Georgia, Illinois, Indiana, Iowa, Kansas, Maryland, Michigan, Minnesota, Mississippi, Nebraska, New Jersey, New York, Ohio, Oklahoma, Pennsylvania, South Carolina, South Dakota, Tennessee, Texas, Virginia, West Virginia, Wisconsin)
• Villafranchian of China (2)
• Blancan of United States (31: Florida, Idaho, Kansas, Nebraska, Oregon, South Dakota, Texas, Washington)
• Pliocene of Canada (1: Northwest Territories), China (2), United States (1: South Carolina)
• Turolian of China (5), Spain (8)
• Hemphillian of United States (43: Arizona, California, Florida, Idaho, Montana, Nebraska, Nevada, New Mexico, Oklahoma, Oregon, Washington)
• Miocene of Bulgaria (1), Canada (7: Saskatchewan), China (5), France (3), Hungary (1), Kazakhstan (1), Slovakia (1), Switzerland (2), Türkiye (1), United States (138: California, Colorado, Delaware, Florida, Georgia, Idaho, Kansas, Montana, Nebraska, Nevada, New Mexico, Oklahoma, Oregon, South Dakota, Utah, Wyoming)
• Harrisonian of United States (1: Nebraska)
• Oligocene of China (1)
Total: 408 collections including 445 occurrences