ANT 350 Lecture Notes - Lecture 23: Prognathism, Pelvis, Long Bone
Document Summary
All erectines: 727-1325 cm3; x = 987cm3 (n=42) Recent h. sapiens: 1070-1670 cm3; x = 1370 cm3 (n=535) Ergasters: 788-927 cm3; x = 871 (n=5) Zhoukoudian (0. 4-0. 6 mya): 865-1070 cm3 x = 1029 cm3 (n=7) Brunhes/matuyama: below b/m = 865 cm3; above b/m 1065 cm3. Neurocranial expansion: higher, broader vaults, more distinct foreheads, supratoral sulcus, reduced postorbital constriction: maximum breadth still at cranial base. Inion opisthion = nuchal plane (nuchal muscles) Supraorbital torus: structural integrity anchor face to vault. Broad nose w\ everted ri(cid:373) large e(cid:454)ter(cid:374)al (cid:374)ose. Nose = more inspired air & moisture retention zzgomaticoalveolar margin (zam: variable: oblique - angled. Less robust than australopiths (relatively taller & thinner corpus) Posterior teeth (molars & premolars) reduced (fall in h. sapiens range) Maxillary incisors = shovel shaped basal tubercles & marginal ridges pronounced. Two important specimens: er 1808 (~60%, wt 15000 (~85%) treasures.
