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19 Cards in this Set
- Front
- Back
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What are the two theories of homosapien evolution? |
Multiregional Out of Africa |
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How long ago were tools starting to be used? |
3.2 mya |
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When did art begin arising? |
200,000 years ago |
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What are shared derived characteristics of Cercopithecoidea? |
-Dorsoventral flattening of trunk -Clavicle longer -Sternum Broader -iliacs blade broad -Lumbar region shortened -Brain is larger |
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Morphological changes within hominid group? |
-jaws shorter -Some teeth smaller -No diastema between incisors and canines in humans -Palate is arched in humans |
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How long ago did chimp and gorilla ancestors split? |
-About 8-10 mya |
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How long ago did chimp and human ancestors split? |
-About 6.5 mya |
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How long ago did Ardipithecus ramidus come about? |
-4.4 mya |
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What are the shared derived characteristics of Ardipithecus ramidus with Homo? |
-Foramen magnum under skull -Shoulder and elbow joint more human like -canines more like incisors -little sexual dimorphosism in canines -pelvis bowl-like, suggesting bipedalism |
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How long ago did austarlopithecus afarensis come about? |
3.2-3.7 mya |
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What are some shared derived characteristics of austarlopithecus afarensis? |
-includes lucy fossil -lighter, more bipedal form without sagittal crests -Toes all line up and hips are shaped for bipedalism -brain still about chimp size |
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How long ago did the first Homo arise? |
2.3-2.5 mya |
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characteristics of homo rising? |
-larger brains than afarensis -only found in africa -tool making showed up along with them |
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What were the two groups of homo in the beginning? |
Homo habillis and Homo erectus |
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characteristics of homo erectus? |
-74% brainsize of humans -smaller teeth than habillis -used tools extensively -group in africa called h. ergaster |
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When did homo sapiens show up in the fossil record? |
200,000-300,000 years ago |
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First group of humans? |
Homo heidelbergensis |
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Homo sapien characteristics? |
-slightely larger brains -thicker and more robust skull -larger teeth -jaw doesnt stick out as far from face -language skills developed |
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When did neadrthals show up? |
300,000 years ago |
