Chronology of hominin evolution

Chronology of hominin evolution - o More adept at...

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27/02/2008 09:12:00 Chronology of hominin evolution Three hominin genera o Ardipithecus Earliest bipedal primates Two species Ardipithecus kadabba  (5.8 – 5.5 mya) o Middle Awash Valley, Ethiopia Ardipithecus ramidus  (5.5 – 4.4 mya) o Aramis, Ethiopia No artifacts – no culture Small cranial capacities o Australopithecus Early hominins A. anamensis  (4.2-3.9 mya) A. afarensis  (3.8-3.0 mya) A. africanus  (3.0-2.0 mya) A. boisei  (2.6-1.0 mya) A. robustus  (2.0-1.0 mya) No artifacts or culture Small cranial capacities Gracile versus robust Small versus large body size Gracile Light skeletal build Smooth skull shapes
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A. anamensis, A. afarensis, and A. africanus Robust Heavier sjeletal build Large skull ridges, sagittal crests Larger teeth A. boisei, A. robustus The australopithecines and early  Homo Ancestors of Homo split off o Between 3 and 2 mya Marked by: o Increase in cranial capacity
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Unformatted text preview: o More adept at bipedalism o Smaller teeth o Material culture Appearance of genus Homo Four species o Homo habilis (2.4-1.6 mya) o Homo erectus (1.7-0.3 mya) o Homo sapiens (0.3 mya-present) Homo sapiens (archaic, 0.3 mya 28 tya) Homo sapiens sapiens (150 tya present) Homo sapiens neandartalensis (130-35 tya) o Homo floresiensis Early Homo Homo habilis o 2.4-1.6 mya East Africa o Larger cranial capacity Language? o First use of stone tools A. Garhi? Oldowan tools Chopper/pebble tools Homo erectus o 1.7 0.3 mya First hominid/hominin found outside of Africa o Larger cranial capacity 600 1225 cm3 Language o More complex stone tools Acheulian tools Handaxes First hominid to use fire 27/02/2008 09:12:00 27/02/2008 09:12:00...
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Chronology of hominin evolution - o More adept at...

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