ANT 350 Study Guide - Quiz Guide: Lumbar Vertebrae, Facial Skeleton, Humerus
Document Summary
Garhi africanus-like australopiths in east africa. Afarensis africanus in south africa and garhi in east africa. Both taxa have bicuspid p3, large posterior teeth. Garhi has large canine and long humerus and femur possibly a less primitive postcranial form, but too fragmentary to be sure. A. africanus (3-2. 3 to 1. 8 mya: taung child, postcrania. Pelvis and limb = greater flare, orientation is more lateral than afarensis, longer femoral neck, and smaller head/acetabulum. Sts 14 shows 6 lumbar vertebrae: neurocranium. More flexed cranial bases, lacking temporonuchal crests, articular tubercle, cc=485, more central foramen than afarensis: splanchnocranium. No canine jugum, reduced canine and root, vertical nasoalveolar clivus, shorter face, oblique zam, angled forward infraorbital region (because of cheek teeth), total facial projection with less exaggerated alveolar prognathism: mandible and dentition. More robust corpus, incisor like canine, bicuspid p3, hominin maxillary incisors, bigger molars and premolars. 450 cc, anterior sagittal crest, no cranial base or occipital bone.
