ANT 001

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Author:
trainingliz89
ID:
120511
Filename:
ANT 001
Updated:
2011-12-03 19:18:27
Tags:
Middle Hominin
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Description:
Lecture 16
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  1. A. africanus (2.8-2.4mya)
    • - Taung, South Africa
    • - child (tooth eruption)
    • - small deciduous canines
    • - ape- sized brain
    • - endocast showed brain stem position changed (foramen magnum)
  2. Piltdown Man
    • - "discovered" in 1912 in England by Charles Dawson
    • - "proved" earliest hominin was English (not African)
  3. A. africanus (2.802.4mya) Bipedal Traits
    • - Human like shape of pelvis
    • - Convergent big toe
    • - Foramen magnum under skull
  4. The Pleistocene
    First members of the genus Homo
    • First discoveries of Homo at Olduvai Gorge in Tanzania
    • Dating atleast 2.4-1.6mya (Pleistocene)
  5. Homo habilis (2.4-1.6)
    • associated with Mode 1 Oldowan tools
    • larger brain
    • reduced cheek teeth
  6. Homo ergaster (1.8-0.6mya)
    • "Turkana Boy"
    • - closely related to modern human
    • - tall
    • - associated w/Acheulean hand axes Mode 2
    • - first hominin to leave africa

    • Shared features w/earlier hominins:
    • - Supraorbital torus and sulcus
    • - no chin/receding forehead

    • Derived features:
    • - big brain
    • - smaller cheek teeth
    • - higher skull/less prognathism
    • - Occipital torus (bump in back of head)
  7. Homo erectus
    • - large brow ridges
    • - sagittal keel
    • - angled occipital region w/torus
    • - East Asian- less elaborate tool, beleived to have used bamboo tools instead
  8. Trend
    • smaller, flatter faces
    • rounder, larger brain cases
    • less robusticity
    • smaller teeth
    • taller, longer limbs
    • less sexual dimorphism

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