PHILIPPE PSAILA / SCIENCE PHOTO LIBRARY PHILIPPE PSAILA / SCIENCE PHOTO LIBRARY
Scientists with Homo ergaster jaw bone. Leo Gabunia, from the Republic of Georgia National Academy of Sciences (right), presenting David Lordkinpanidze, the head of the Geological and Palaeontological Department of the State Museum of Georgia (left), with a mandible (lower jaw), from H. ergaster. H. ergaster is considered to be an early African type of H. erectus, although some believe it to be a separate species entirely, as it was only found in Africa, whereas H. erectus was found throughout Europe, Asia and Africa. H. ergaster lived about 1.7 million years ago. Photographed at the National Museum of Natural History, Paris, France.
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