PaleoDB taxon number: 55013
Full reference: W. W. Korth and N. Rybczynski. 2003. A new, unusual castorid (Rodentia) from the earliest Miocene of Nebraska. Journal of Vertebrate Paleontology 23(3):667-675
Sister taxa: none
Type specimen: F:AM 65723, a skull (nearly complete cranium with associated mandible). Its type locality is Harrison Formation (Migmacastor Locality), which is in a Harrisonian terrestrial horizon in the Harrison Formation of Nebraska.
Ecology: amphibious browser
Average measurements (in mm): P4 4.50 x 4.35, M1 3.50 x 4.15, M2 2.90 x 3.60, p4 3.80 x 3.95, m1 3.10 x 3.75, m2 3.30 x 3.65, skull 65.8 x 55.6