Grasslands

Became more common of the African rainforests.

Hole in the bottom of the skull through which the vetebral column enters the skull.

Importance is when hominids become bipedal th ethe skull ended up on top of the spinal column.

A primate which lived around 7 million years ago.

Lived on the shores of the lake, where its bones were fossilized and recovered by Brunet and his colleagues in 2001. Represented by an almost complete skull, has a unique mix of homonid and hominoid traits. While the skull itself is hominoid, with a small brain, large brow ridges, and wide face, the teeth seem more hominid like. No evidence it was bipedal. 

Bipedal possible ancestor.

Discovered in western Kenya by Brigitte Senut adn colleagues in 1998.