Sahelanthropus%20tchadensis

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• Sahelanthropus tchadensis
• toumai child
• 6-7 MYA
• Chad

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• Ardepithecus ramidus
• 5.8 4.4 MYA
• Ethiopia

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Australopithecines

• Genus Australopithecus
• Slender (gracile) forms
• A. africanus, A. afarensis
• Robust forms
• A. robustus, A. boisei, A. aethopicus

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• A. africanus
• South Africa
• 3 2 mya
• slender type

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• A. afarensis
• Slender form
• lucy
• East Africa
• 3mya

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• A. robustus
• Robust form
• Olduvai gorge
• 1.8 mya

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Genus Homo

• Characteristics of the genus

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• Homo habilis
• 2.0 1.9 mya
• Brain size 775 cc
• Speech centers
• Omnivore
• Olduvai gorge

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• H. habilis (cont.)

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• H. erectus
• Java
• 1.9-0.3 mya
• Brain 800-1000cc

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• H. erectus (cont)
• Extensive tool use
• Fire
• Dispersed into Europe and Asia

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• H. neanderthalensis
• 200k bp
• Neander valley
• 1450 cc

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• H. sapiens
• Cromagnon man
• 100-150k bp
• 1360 cc
• Culture

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• Timeline of Homonid evolution

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Note on human variability

• Ethnic - of or relating to large groups of people
  classed according to common racial, national,
  tribal, religious, linguistic, or cultural origin
  or background.

Lewontin 17 genes, 7 ethnic groups
Morphological differences not adaptive
Genetic variation
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