ANT203H5 Lecture Notes - Lecture 15: Kamoya Kimeu, Brain Size, Australopithecus Africanus
Document Summary
Oldest homo: a partial mandible found in ledi-geraru, ethiopia, dated to 2. 8mya, mixed au. traits and homo like traits, no species name given yet due to just a single fossil found. Possible candidates: au. africanus dated to 3. 3-2. 1mya and physical characteristics suggest ancestry to homo, au. garhi right age and a transitional form between au. And homo: au. sediba transitional form but young. All three not very good candidates: au. afarensis 3-4mya, found on east africa. Increased brain size: difference in dental proportions, reduction in premolar and molar (post-canine) tooth size and changes in their shape, relatively larger incisors (front teeth, more orthognathic face (flatter face, reliance on cultural behaviour. Homo habilis (2. 33-1. 44mya: first fossils a mandible, parietal bones, a foot and a clavicle were found, found at olduvai gorge, tanzania by mary and louis leakey in 1960"s, short stature, long arms, lesser prognathism, slightly larger cc.
