Neanderthal
From Tardis Wiki, the free Doctor Who reference
Neanderthals are a species related to the Humans who were specially adapted to dwell in a colder climate. They lived in Europe and parts of Asia and went extinct around 24,000 years ago. The Neanderthals were wiped out by the Humans, with the help of the Dæmons. (DW: The Daemons)
One tribe, who Nimrod belonged to, herded mammoths during the summer for food. They also worshiped The Burning One and considered the fang of a Cave Bear to be a sign of wisdom. (DW: Ghost Light)