ANTC17H3 Lecture Notes - Sivapithecus, Aegyptopithecus, Quadrupedalism
Document Summary
Large brain compared to body size; large body size over all. Rounded bulb that allows for rotation of elbow. Two regions of curvature (neck and lumbar region) Curvature of finger/toe bones (arboreal v. knuckle walking v. bipedalism. Non-biped: hallux low down and smaller on foot; acts as grasping appendage. Biped: arched foot, hallux in line with other toes. Large head on femur as well as a femural angle, shrinking of neck of femur. Typically find multitude of primitive and derived traits together. Small teeth incl. canines, flat face, thick enamel. Large head on femur, but also long neck. In between trait: canines and molars larger than humans, smaller than apes. Human like: lacks honing complex, fm forward to base of skull. ardi one of most complete fossil ancestors found. Less sexual dimorphism in species, indicates social behaviour.
