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Sahelanthropus tchadensis “toumai child” 6-7 MYA Chad.

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Presentation on theme: "Sahelanthropus tchadensis “toumai child” 6-7 MYA Chad."— Presentation transcript:

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3 Sahelanthropus tchadensis
“toumai child” 6-7 MYA Chad

4 Ardepithecus ramidus 5.8 – 4.4 MYA Ethiopia

5 Australopithecines Genus Australopithecus Slender (“gracile”) forms
A. africanus, A. afarensis Robust forms A. robustus, A. boisei, A. aethopicus

6 A. africanus South Africa 3 – 2 mya “slender” type

7 A. afarensis Slender form “lucy” East Africa ~3mya

8 A. robustus Robust form Olduvai gorge 1.8 mya

9 Genus Homo Characteristics of the genus

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

11 H. habilis (cont.)

12 H. erectus Java mya Brain cc

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

14 H. neanderthalensis 200k bp Neander valley 1450 cc

15 H. sapiens Cromagnon man k bp ~1360 cc Culture

16 Timeline of Homonid evolution

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18 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 a b c d


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