ANT100Y1 Chapter Notes - Chapter 1: Brain Size, Temporal Fossa, Australopithecine
10/01/2016
Morphological Differences
Gracile & Robust Australopithecines:
FEATURE
GRACILE
ROBUST
Sagittal and Nuchal crests
Absent
Present (males)
Temporal fossa
Smaller
Larger
Forehead
Steeper
Flatter
Mandible
Less robust
More robust
Incisors and Canines
Relatively larger
Relatively smaller
Premolars and Molars
Relatively smaller
Relatively larger
Homo & Australopithecus:
FEATURE
GRACILE
ROBUST
Sagittal and Nuchal crests
Absent
Present (males)
Brain size
Relatively larger
Relatively smaller
Face
Relatively smaller
Relatively larger
Mandible
Less robust
More robust
Incisors and Canines
Smaller
Larger
Premolars and Molars
Smaller
Larger
Early Homo & Homo sapiens:
FEATURE
GRACILE
ROBUST
Brain size
Smaller
Larger
Mandible
More robust
Less robust
Face
Relatively longer
Relatively shorter
Brow ridges
More robust
Less robust
Tooth size
Relatively larger
Relatively smaller
Postcranial skeleton
More robust
Less robust
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