ANTHR101 Lecture Notes - Lecture 7: Cubic Centimetre, Sagittal Crest, Uniface
2 Mar 2016
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98 percent of genes shared with chimps. Deep history of human ancestry in perspective: carl sagans analogy. History of univers in a 12 cal month. 1sec= 475 years appear at 11:54 pm dec 31st. Hominid (family) chimps, gorillas humans 98 percent dna. Hominins (sub family) modern humans and direct ancestors. Human ancestry together: usually you only have fragments of skulls and you have to put them back, sometimes it can be hard to tell, deal with time period. Not a family tree but a bush, species that go nowhere, mixing between, more complicated than though before. 3 candidates for earliest humans brain size, brow ridge shoveling face (prognathsim : sahelanthropus tachademsis: (77 mya, western chad) has nearly complete skull, orrorin tugensis (6mya, western kenya, ardipithecus ramidus (5. 8-4. 4 mya, ethiopia) discovered in 1982. Australopithecus: the first definite hominin genus, gracile: smaller teeth, lighter features, robust: larger teeth, heavier features, sagittal crest. Adaptive radiation suggested as explanation for diversity.
