D is for Diplobunops.
Diplobunops is a small hoofed mammal related to pigs. The group of mammals that contains Diplobunops and other related species is loosely referred to as oreodonts.
Diplobunops matthewi (Peterson, 1919) – fossil mammal skeleton from the Eocene of Utah, USA. (CM 11801, Carnegie Museum of Natural History, Pittsburgh, Pennsylvania, USA)