ANTH-101 Lecture Notes - Lecture 9: Gigantopithecus, Encephalization, Genu Valgum
10 May 2019
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Document Summary
10-8 mya became uninhabitable and apes disappear: diyopithecus: europe - 12. 5 mya. Thin dental enamel and gracile jaws: gigantopithecus: asia - 8 mya - 100 kya. Estimated weight of 900 kg, 3 meters tall. Apes become extinct in europe and northern asia. Gap between middle miocene taxa (e. g; kenyapithecus/equatorius and more recent primates): hominins: humans and our ancestors going back to our split with great apes. Changes to the face; teeth and jaws are less heavily built. Skeletal traits associated with bipedalism: bipedalism: short, wide pelvis. Position of the knees under the body ("knock knees"). Detectable based on features of the femur: advantages. Freeing of the hands for food carrying and tool use. Infants are born rather undeveloped and need a lot of care: early possible hominin sites. Early hominin candidates: ardipithecus kadabba: 5. 5 mya in ethiopia. Honing complex - not found in any other hominins. Single pedal phalanx ambiguous as to locomotion: sahelanthropus tchadensis: chad in 6-7 mya.
