Aethiopicus 2.5- 2.0 million years ago One major specimen= Black Skull KNM-ER 17000 Crest Primitive features Earliest robust? Archaeology of Australopithecines Laetoli footprints 3.6 mya Dated K/Ar Chrsnometric absolute dating = mean age +- range Relative dating The Main Gorge at Olduvai ( dry African rock- layered land) Louis and Mary Leakey conducted continuous excavations from the 1930s to early 1980s. More than 150 species of extinct animals (hominids too); provide clues to the ecological conditions of early hominid habitats. Geological processes make O.G. extremely important: Active volcanic processes caused rapid sedimentation which preserved bone and artifacts Faulting exposes geological beds near the surface Volcanic activity provides a wealth of datable material Absolute: K/Ar Relative: superposition Remains at Olduvai A dense scatter of stone and fossilized animal bone from Olduvai, 1.6 mya Some of these remains are the result of hominid activities. Hominid remains across millennia. Olduvai Activities Butchering localities, areas with mammalian bones with signatures of processing. Quarry localities where stone is extracted and used to make tools Multipurpose localities areas where sleep,
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