Peninj Mandible

Also called  Natron Mandible,   an almost perfectly preserved fossil hominid jaw containing a complete set of adult teeth. It was found by Kamaya Kimeu at Peninj, a locale to the west of Lake Natron, about 50 miles (80 km) from the Olduvai Gorge in Tanzania in 1964. About 120 artifacts belonging to the Acheulian industry, including stone cleavers and hand axes, were also unearthed near the fossil. The sandstone in