ammonites
Antecalomys phthanus Korth 1998 (mouse)

Mammalia - Rodentia - Cricetidae

Full reference: W. W. Korth. 1998. Annals of Carnegie Museum 67(4):299-348

Belongs to Antecalomys according to W. W. Korth 1998

Sister taxa: Antecalomys valensis, Antecalomys vasquezi

Type specimen: Its type locality is Pratt Quarry, which is in a Clarendonian channel siliciclastic in the Ash Hollow Formation of Nebraska

Ecology: ground dwelling herbivore

Average measurements (in mm): M1 1.68 x 1.03, M2 1.11 x 0.99, M3 0.770 x 0.880, m1 1.59 x 1.08, m2 1.34 x 1.04, m3 1.00 x 0.89

Estimated body mass: 18.9 g based on m1 length