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Basic Chronology of Human Evolution CGU 4MI

Basic Chronology of Human Evolution CGU 4MI. Earliest date for evolution of first hominids (2 legged primate) in Africa. 6 million years ago (mya). First fossil evidence of Australopithecus (first known hominid group) in east Africa. 3.5 mya.

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Basic Chronology of Human Evolution CGU 4MI

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  1. Basic Chronology of Human EvolutionCGU 4MI

  2. Earliest date for evolution of first hominids (2 legged primate) in Africa 6 million years ago (mya)

  3. First fossil evidence of Australopithecus (first known hominid group) in east Africa 3.5 mya

  4. probable appearance of Homo habilis (first group in evolution towards modern humans) in east Africa; evidence of first tools 3 mya

  5. First evidence of Homo erectus (larger brain than Homo habilis) in east Africa 1.8 mya

  6. Evidence of Homo erectus in Europe and of chipped stone instruments in Africa; Pleistocene period begins (marked by global temperature fluctuations) 1.5 mya

  7. First evidence of chipped stone instruments in Europe 700,000 years ago (ya)

  8. Homo erectus uses fire and develops strategy for hunting large game; first appearance of archaic Homo sapiens (termed ‘archaic’ because brains were only 85% size of modern humans; this included the group Neanderthal ) 400,000 ya

  9. Appearance of Homo sapiens sapiens (anatomically modern humans) in Africa only (‘replacement hypothesis’ suggests that this evolution occurred in Africa and then spread throughout the world, replacing existing archaic groups) From this point on human evolution becomescultural, not biological 100,000 ya

  10. Beginnings of the most recent glacial period 80,000 ya

  11. Arrival of humans in Australia 40,000 ya

  12. Arrival of humans in America 25,000 to 15,000 ya

  13. First permanent settlements; earth’s population estimated at 4 million Plymouth, Mass in 1600s – first European settlement in North America 12,000 ya

  14. End of most recent glacial period; beginning of Holocene period 10,000 years ago

  15. Let’s finish with some perspective… • Imagine placing a football where today’s note began; nudge the ball ever soslightly forward and we’d be celebrating a touchdown. Humans have been around for a mind numbingly short time!

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