ANTH 1001 Midterm: TEST THREE ANTH 1001
Document Summary
Hominins do not have canine-premolar honing complex, whereas chimpanzees do have this complex. Sagittal crest: ridged mid bone on top of head, sagittal crest is for attachment of temporalis muscles, earliest homo does not have a sagittal crest. Skulls of australopithecus afarensis look more like apes than humans. Sexual dimorphism in body weight: sexual dimorphism in body weight implies polygyny, earliest definitive evidence of bipedality is 4. 4 mya ardipithecus ramidus, ardipithecuc ramidus is bipedality, but also arboreal quadrupedlity. Compared with pan, early hominins: have smaller brain size, smaller incisors, canines, but larger molars bipedal, grasping big toe, arms and legs equal in length. Ardipithecus ramidus was bipedal on the ground and quadrupedal in the trees. Two anatomies suggest partly arboreal lifestyle: was quadrupledal in trees, being very careful, and no evidence of suspensory locomotion. Did australopithecines have a partly arboreal lifestyle: humero femoral index: humerus x 100/femur, australopithecus sediba relatively long arms.
