Purgatorius was a genus of mammal that lived during the late Cretaceous period, and survived well into the early Palaeocene. It is thought to have been the first primate.
In Walking with Dinosaurs[]
Death of a Dynasty[]
A corpse of a Purgatorius is seen alongside another corpse of a young Tyrannosaurus, whose color palate looks nothing like that of the living youngsters seen much later in the episode and most likely more represents the dubious genus Nanotyrannus. The animal was most likely killed by carbon monoxide from volcanic vents nearby. An adult male Tyrannosaurus is seen nearby, he cannibalizes the dead youngster because it is much bigger than the tiny Purgatorius, which was most likely left to rot.