PATRICK LANDMANN / SCIENCE PHOTO LIBRARY PATRICK LANDMANN / SCIENCE PHOTO LIBRARY
Homo habilis fossil skull cast. Cast of the skull of Homo habilis, (catalogue number KNM ER 1813). The skull was discovered in Koobi Fora, Kenya by Kamoya Kimeu in 1973, and is estimated to be 1.9 million years old. H. habilis was an ancestor of modern humans (H. sapiens sapiens) that lived between around 2.1 and 1.5 million years ago. Habilis means handy, and refers to the supposed tool-making abilities of these hominids. Their brains were small compared to modern humans.
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