The identification of "Ardi" is a major breakthrough because her species was an early step in the process of human evolution. Scientists do not claim to know whether Ardi's species evolved directly into modern humans, but it is an important branch on the family tree. Some others:
SOURCE: Science ¿ AAAS, National Museum of Natural History's department of anthropology | Illustration by J.H. Matternes - The Washington Post - October 2, 2009
'Ardi' May Rewrite the Story of Humans Article | Ardi lived 4.4 million years ago in the woodlands of East Africa. She spent most of her time in the trees. She stood about 4 feet tall, weighed 110 pounds, and had long arms, short legs, and a grasping big toe that was perfect for clambering branch to branch. She ate in the trees, raised her...