ANTH 2140 Lecture Notes - Lecture 4: Laetoli, Mary Leakey, Olduvai Gorge
5 Dec 2012
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Document Summary
Diversity of new species evolve between 4-2. 5 mya in east africa. Evolutionary developments in physical characteristics and new technologies that allowed the genus homo to expand its geographic range. Footprints in volcanic ash layer dated to 3. 8 mya. Increase in brain size correlates to the use and development of tools (stone) Oldowan stone tools (first: 2. 6-1. 15 mya, 1. 9-1. 5 mya in text. Earliest evidence from gona, hadar region, ethiopia. Not found in association with any fossil remains. What made these tools: homo habilis, robust astrolopithesis. Differing surfaces on the stone tools: dorsal, ventral, distal end, proximal end. Oldowan tools quite effective in: cutting wood, butchering animals. Dki circle of stones in olduvai gorge: glynn isaacs food sharing hypothesis oldowan base camp, position of rocks not similar expected of structures in camp, no evidence of processing of animal bone or plant resources. Hunting is a group activity characterized by co-operation. No smoking spear recovered from early hominin sites.
