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The Evolution of Primate Features Unique to Man

Explore the distinct features of humans among primates through the ages, from bipedalism to brain size increase, with key fossil findings like Sahelanthropus and Australopithecus anamensis. Discover the evolution of Homo species and their migration out of Africa.

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The Evolution of Primate Features Unique to Man

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  1. Chapter 21: The Evolution of Primates

  2. Features Unique to Man • Bipedal • Curvature of spine, weight distribution • Pelvis – upright walking • Foramen magnum – base of skull • Longer legs • Alignment of big toe • Increase in brain size • Skull • Supraorbital ridges absent • Flatter face • U-shape for teeth • Smaller teeth • Large nose • Large jutting chin • Big not not opposable • Arched foot • Hairless skin

  3. 6 mya- Sahelanthropus 4 mya Australopithecus anamensis 4.38 mya- Ardipithecus 3.9 mya -3.0 mya Austral. afarensis 3.5 mya Kenyanthropus

  4. 3.0 mya- 2.0 mya Austra. africanus 2.7 mya- 1.2 mya Paranthropus(Austr.) boisei 2.0 mya -1.5 mya P.(Austr.) robustus

  5. Lucy - 3.2 mya A. afarensis

  6. A. afarensis

  7. A. boisei • Olduvai Gorge • Tanzania • 1.8 mya

  8. Sagittal crest Brow ridges simian A. boisei _

  9. A. robustus

  10. H. ergaster 1.7-1.9 mya Homo habilis 1.9-2.6 mya (archaic H. sapiens) H. heidelbergensis 500,000-800,000 yrs ago H. erectus 150,000 mya -1.4 mya

  11. H. floresiensis or H. erectus? 18,000 yrs ago H. neandert(h)alensis - 10,000-350,000 yrs ago H. sapiens sapiens 250,000 yrs ago-present

  12. 1st 1856 – Neander Valley in Feldhofer caves, Germany • Skullcap • Other bones, too

  13. Neandertal vs modern human

  14. ‘Java man’ skullcap – H. erectus

  15. 3rd ‘Peking man’ • H. erectus • China • 14 skulls and more • stone tools • Campfires • 300,000-500,000 years ago

  16. 4th Homo habilis • ‘handy man’ • stone tools • 2 mya - 1.5 mya • Olduvai Gorge • 1960’s • The Leakeys

  17. Homo erectus 1.5 mya - 250,000 First to leave Africa? Long thought a direct descendent of H. sapiens

  18. Cro-Magnon

  19. http://anthro.palomar.edu/primate/videos/evol07_vid_genconnect.htmlhttp://anthro.palomar.edu/primate/videos/evol07_vid_genconnect.html

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