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Migmacastor Temporal range: late Oligocene or early Miocene
Life restoration
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Class:	Mammalia
Order:	Rodentia
Family:	Castoridae
Genus:	†Migmacastor Korth & Rybczynski, 2003
Species:	†M. procumbodens
Binomial name
†Migmacastor procumbodens Korth & Rybczynski, 2003

Migmacastor is an extinct member of the beaver family, Castoridae, known from a single species, Migmacastor procumbodens. Only a single specimen has been reported, a skull from the late Oligocene or early Miocene of Nebraska. Features of the incisor teeth of Migmacastor indicate they were used to dig. Other extinct beavers, including the better-known Palaeocastor, were also fossorial (digging), but Migmacastor may have become a burrower independently.

References

1. Korth, William W.; Rybczynski, Natalia (2003), "A new, unusual castorid (Rodentia) from the earliest Miocene of Nebraska", Journal of Vertebrate Paleontology 23 (3): 667–675, doi:10.1671/2371

v t e Castorimorpha
Kingdom: Animalia Phylum: Chordata Class: Mammalia Order: Rodentia
Castorimorpha Diplolophidae †Diplolophus †Floresomys †Griphomys †Jimomys †Meliakrouniomys †Schizodontomys †Texomys Castoroidea Castoridae †Migmacastor †Agnotocastorinae †Agnotocastorini Agnotocastor Neatocastor †Anchitheriomyini Anchitheriomys Oligotheriomys Propalaeocastor †Palaeocastorinae Capacikala Palaeocastor Pseudopalaeocastor †Euhapsini Euhapsis Fossorcastor †Castoroidinae Priusaulax †Castoroidini Castoroides Dipoides Monosaulax Procastoroides Prodipoides †Nothodipoidini Eucastor Microdipoides Nothodipoides †Trogontheriini Asiacastor Boreofiber Euroxenomys Trogontherium Youngofiber Castorinae Castor †Chalicomys †Hystricops †Romanofiber †Schreuderia †Sinocastor †Steneofiber †Zamolxifiber †Eutypomyidae Eutypomys Janimus Mattimys Microeutypomys †Rhizospalacidae Rhizospalax
Geomorpha †Eomyidae Simiacritomys Symplokeomys †Apeomyinae Apeomyoides Apeomys Arikareeomys Megapeomys Zophoapheomys †Eomyinae Adjidaumo Aguafriamys Asianeomys Aulolithomys Centimanomys Comancheomys Cristadjidaumo Cupressimus Eomyodon Eomyops Eomys Estramomys Japaneomys Kansasimys Keramidomys Leptodontomys Ligerimys Metadjidaumo Metanoiamys Meteomys Montanamus Namatomys Neoadjidaumo Orelladjidaumo Paradjidaumo Paranamatomys Pentabuneomys Protadjidaumo Pseudotheridomys Rhodanomys Ritteneria Ronquillomys Viejadjidaumo †Yoderimyinae Litoyoderimys Yoderimys Zaisaneomys Zemiodontomys Geomyoidea †Griphomys †Meliakrouniomys †Florentiamyidae Ecclesimus Fanimus Florentiamys Hitonkala Kirkomys Sanctimus †Heliscomyidae Apletotomeus Heliscomys Passaliscomys Tylionomys Heteromyidae Dipodomyinae †Aurimys Dipodomys Microdipodops Heteromyinae †Diprionomys Heteromys †Metaliomys Perognathinae Chaetodipus Perognathus Geomyidae †Entoptychinae Entoptychus Gregorymys Pleurolicus Ziamys Geomyinae Cratogeomys Geomys Heterogeomys Orthogeomys Pappogeomys Thomomys Zygogeomys

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