Pliopapio alemui and Kuseracolobus aramisi are two different new primate species dated between 4.8 and 4.3 million years ago known only from Gona and the Middle Awash study area in Ethiopia
A new study explains that humans evolved from an ancestor not limited to tree or other elevated habitats, and sheds light on what preceded human bipedalism
4.5 million-year old fossil of the human ancestor Ardipithecus ramidus shows evidence of greater reliance on bipedalism than previously suggested