ANTH 111 Lecture Notes - Sterkfontein, Femur Neck, Foramen Magnum
Early Hominins
Show up around 7 mya
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In East Africa there is this Great Rift Valley--where
many fossil have been found
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More fossils are being found in north central
Africa
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There was an ear that had more than one species
of upright walkers
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Create yourself a timeline
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Sahelanthropus tchadensis*
Earliest upright walker
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Brain is 370 cm3--same size as chimpanzees
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Sah- refers to the Sahara desert, anthro- refers
to human and chad is from chad (north central
Africa)
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Supraorbital torus, the big bone above the
eyes
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Bipedalism and the Late Miocene Hominins,
Australopithecines (pg. 74-85)
Wednesday, September 20, 2017
10:28 AM
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ere
s
ers
tral
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eyes
Smaller canine teeth
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Foramen magnum is more forward on the
skull indicates that it is an upright walker
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Dates 7 mya
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Fossil was discovered in Chad in north central
Africa
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Orrorin tugenensis*
From east Africa
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Orrorin "original," tugenensis "man," so
"original man"
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Femoral neck is quite long, another
characteristic of upright walking
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Dates 5.6-6 mya
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Discovered in Kenya
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Ardipithecus ramidus*
Also comes from east Africa
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"Ground ape at the root"
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They have a unique blend of characteristics
They have adaptations of upright walking, but
they also have the ability to climb trees
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