Chapter 14.2 Earliest Hominins

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Info On Actual Early Hominins

1st Year

Last updated 5:20 PM on 6/10/26
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5 Terms

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Sahelanthropus Tchadensis

  • Found: 6 — 7 Ma (2002 Chad)

  • Info: Thick Brow & Brain Size Like Chimp, Reduced Canines & Foramen Magnum Position Suggests Bipedalism

  • Issues: Too Close To Chimp/Human Split (Could Suggest Gorilla Ancestor), Only Evidence Is Foramen Magnum

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Orrorin Tugenensis

  • Found: 6 Ma (1999 Tugen Hills)

  • Info: Small Teeth & Thick Enamel, Femoral Neck Length/Shape Suggest Bipedalism

  • Issues: Original Specimens Missing & Poor Quality Images/CT Scans

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Ardipithecus Kadabba

  • Found: 5.2 — 5.8 Ma (1994 Middle Awash)

  • Info: Honing Upper Canines, Toe Bones Similar To Later Hominins Suggest Bipedalism

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Ardipithecus Ramidus

  • Found: 4.4 Ma (1994 Middle Awash)

  • Info: Primitive Features, Foramen Magnum & Pelvis Bipedal Adaptations, Reduced Non-Honing Canine

  • Interpretations: OG Research Team Argued Bipedal, Sig. Time On Trees

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Ardipithecus Issues

  • Research Team Limits Fossil Viewings

  • More Ape Than Monkey (May Be Ape Fossil)