Chalicomys KAUP , 1832

Rekovets, Leonid, Stefen, Clara & Demeshkant, Vitalii, 2020, Beavers (Castoridae, Rodentia) From The Late Miocene (Mn 9) Locality Grytsiv In Ukraine, Fossil Imprint 76 (1), pp. 165-173 : 166

Genus Chalicomys KAUP, 1832

C o m m e n t s. The anatomy and dental morphology of Chalicomys ( Kaup 1832) is similar to that of the genus Castor . Therefore, during the morphometric analysis, it is important to distinguish morphological features that are specific only for Chalicomys . Those diagnostic features, according to Casanovas-Vilar et al. (2008), are less hypsodont teeth with developed roots, less extensive cement, shorter hypostria and hypostriids, longer both upper and lower third molars in relation to other molars (however, the M3 is not extended as in Trogontherium ). In addition, there is a long and “8”-shaped p4 like those in Steneofiber but differs from the latter in greater size, stronger hypsodonty, and the development of tetralophodont pattern.