ammonites
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Ansomys cyanotephrus Korth 2007 (mountain beaver)

Mammalia - Glires - Aplodontidae

PaleoDB taxon number: 333390

Full reference: W. W. Korth. 2007. A new species of Ansomys (Rodentia, Aplodontidae) from the late Oligocene (latest Whitney-earliest Arikareean) of South Dakota. Journal of Vertebrate Paleontology 27(3):740-743

Belongs to Ansomys according to W. W. Korth 2007

Sister taxa: Ansomys crucifer, Ansomys descendens, Ansomys hepburnensis, Ansomys nevadensis, Ansomys nexodens, Ansomys orientalis, Ansomys shantungensis, Ansomys shanwangensis

Type specimen: CM 54080, a tooth (right M1 or M2). Its type locality is Harris Ranch Unit E Silt, which is in an Arikareean terrestrial horizon in South Dakota.

Ecology: scansorial insectivore