Tatmanius is a genus of omomyid primate from Eocene North America.

Description

Tatmanius was rather derived, having similar dentition to Trogolemur. Tatmanius lacks a second premolar, much like the related Pseudotetonius. The third premolar was also small compared to other anaptomorphines, and the fourth bore a bilobed root. It is speculated that Tatmanius descended from Pseudotetonius, as they share remarkable similarity in dentition.