ANT 301 Lecture Notes - East African Rift, Sahelanthropus, Meave Leakey
Document Summary
Aafricanus is an austrialopithecine: superfamily hominiodea: apes + humans, family hylobatidae: gibbons (hylobates, family pongidae: orangutans (pongo, family hominidae: african hominoids. Australopithecines: earliest/most primitive hominins; all from africa, like homo and unlike pan, bipedal, most have thick enamel, varying degrees of canine reduction, unlike homo, small brain (like pan, most have larger cheek teeth than any living hominoid. Intermediate canine size w/apical wear: digital reconstruction from ct scan found: Forward placement of foramen magnum (bipedal bone on neck) Cortical bone in femoral neck asymmetrical (associated with bipedalism) Cranium is busted up. : the good news: Digital reconstruction based on computerized tomography: morphologically very primitive cranium. Small ecv (about 300 cc, similar to female chimp: arboreal climbing adaptations. Hand with long curved phalanges and short thumb. Foot with abducted hallux and long toes: bipedal when on the ground. But_ pelvis reveals short, broad, laterally facing ilium: final note: white et al. claim that orrorin and sahelanthropus are actually just.
