ANT101H5 Lecture Notes - Lecture 10: Mary Leakey, Orrorin, Paranthropus Aethiopicus
Document Summary
Large brain size cephalization: modern humans have a significantly large cranial capacity, ratio of brain size over body size what makes us unique. Dentition significant reduction: humans have a 2. 1. 2. 2 formula, definitive anthropoids formula is 2. 1. 2. 3, we do(cid:374)"t (cid:374)eed all of these teeth to swallow a(cid:374)d chew our food. Tool making behaviour standardized: differe(cid:374)t tool types (cid:373)ade i(cid:374) differe(cid:374)t ge(cid:374)us"s. Habitual bipedal locomotion: eoanthropus dawsoni (piltdown man) Found in sussex in england and met criteria of what paleoanthropologist thought of what would be missing link of apes and humans. Was the ahah moment which is what they had been searching for ape like creature with human brain size. After dawson died we learnt that it is actually a hoax and that he attached an orangutan mouth to human: we are the only species that walk on two feet, paleoanthropologists were wrong. Human bipedalism: forward foramen magnum, s spine, l-basin pelvis, long lower limbs. For more stride: valgus position, foot changes.
