Probathyopsis

Probathyopsis, from Ancient Greek πρό (pró), meaning "before", βαθύς (bathús), meaning "thick", and ὄψις (ópsis), meaning "face", is an extinct genus of dinocerate mammal from Paleocene North America.

== Description == Probathyopsis is incredibly basal compared to the later dinocerates in terms of anatomical characteristics. The genus lacks the characteristic skull knobs, unlike derived dinocerates. The flange on the mandible is also less developed as in later members of the clade, like Uintatherium. The lower molars are also longer and narrower than in later members of the group. The genus was sexually dimorphic, with males being larger and having larger mandibular flanges.