| 词条 | Migmacastor |
| 释义 |
| name = Migmacastor | fossil_range = late Oligocene or early Miocene | genus = Migmacastor | parent_authority = Korth & Rybczynski, 2003 | species = procumbodens | authority = 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.[1] References1. ^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 {{Taxonbar|from=Q6844245}}{{paleo-rodent-stub}} 6 : Prehistoric beavers|Oligocene rodents|Miocene rodents|Cenozoic mammals of North America|Monotypic rodent genera|Prehistoric rodent genera |
| 随便看 |
|
开放百科全书收录14589846条英语、德语、日语等多语种百科知识，基本涵盖了大多数领域的百科知识，是一部内容自由、开放的电子版国际百科全书。