CHIEF SPECIMENS: cranium, jaw fragments, teeth found in western Chad, 2001 WHEN LIVED (est., in years ago): 7.6—6 million BRAIN SIZE (est., in cu cm): 360-370 (slightly smaller than a male chimp's) ...
"Ardi" fossils from Ethiopia are 4.4 million years old. Oct. 1, 2009 — -- Scientists today told the world what they know about Ardipithecus ramidus-- "Ardi" for short -- the oldest pre-human ...