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Chapter 21: The Evolution of Primates

Chapter 21: The Evolution of Primates. 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

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Chapter 21: The Evolution of Primates

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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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