“Ardi” may be the oldest known hominid, but she is not the “missing link”.
“Ardi”, a female representative of Ardipithecus ramidus who lived about 4.4 million years ago near today’s Ethiopia, may now be the oldest known hominid, being a million years older than “Lucy”, the skeleton of another species called Australopithecus afarensis.
Genetics suggest that humans and our closest living relatives, the chimpanzees, diverged 6 million to 7 million years ago, although some research suggests this may have happened 4 million years ago. via ABC News
If this article interests you, take a look at The Stone Age Institute.