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 and Bailey 2006 and Rybczynski 2007
Sister taxa: Agnotocastor, Agnotocastorinae, Anchitheriomyinae, Anchitheriomys, Asiacastor, Boreofiber, Capatanka, Castorinae, Chalicomys, Euroxenomys, Migmacastor, Neatocastor, Oligotheriomys, Palaeocastorinae, Palaeomys, Romanocastor, Trigontherium, Trogontheriinae, Trogontherium, Youngofiber, Zamolxifiber
Subtaxa: Castoroidini Hystricopini Nothodipoidini Procastoroides
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)
• Blancan of United States (31: Florida, Idaho, Kansas, Nebraska, Oregon, South Dakota, Texas, Washington)
• Pliocene of Canada (1: Northwest Territories), China (4)
• Hemphillian of United States (37: Arizona, California, Florida, Idaho, Montana, Nebraska, Nevada, New Mexico, Oklahoma, Oregon, Washington)
• Miocene of Bulgaria (1), Canada (7: Saskatchewan), China (10), France (3), Kazakhstan (1), Spain (8), Turkey (1), United States (131: 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: 390 collections including 423 occurrences