Established on a specimen having a nearly complete dentition, and
portions of the cranium.
Dental Formula: (I. 3/3, C. 1/1, Pm. 4/4, M. 3/3,) × 2 = 44.
Upper incisors acute, with strong posterior ridges, lower incisors
compressed and laniariform, canines compressed, with serrated
cutting edges; first upper premolar with rudimentary anterior lobe,
last upper molar with rudimentary postero-internal cusp. Molars
constructed as in _Palæosyops_, but higher, with sharper cones and
more erect external lobes. Internal median valley very much deeper.
Little or no depression at the forehead; zygomatic arch round,
comparatively straight and does not project outwards, and with
obscure postorbital process. Premaxillaries short and straight.
Mandible with nearly straight lower margin, and shallow masseteric
fossa; mental foramen single.