WGS 1001 Lecture Notes - Lecture 5: Hip Bone, Quadrupedalism, Bipedalism
Document Summary
Hominin vs. hominid (directly related to humans & non-human. Big 3 : differentiate humans from primates: large brain, obligate bipedalism (refers to locomotion on two limbs, culture. Not instantaneous (cid:1) (cid:1) (cid:1) primates) (cid:1) (cid:1) (cid:1) (cid:1) (cid:1) (cid:1) (cid:1) (cid:1) (cid:1) (cid:1) (cid:1) (cid:1) Ilium: part of hip bone; oriented in a horizontal flattened manner (cid:1) (cid:1) (cid:1) (cid:1) (cid:1) Ilia orientated front to back instead of horizontally. Angled femur (larger thigh bone); not straight up and down. Loss of opposable toe (primates have opposable toe, humans do not) Increases from 300 cc to 1345 cc (cc= cubic cm) Tools (material culture) large, simple to smaller, complex shifts occurring 2. 6 million years ago, 1. 8 million years ago, 200k years ago, 40k years ago: afarensis. Type of bipedalism (when looking at the skeleton, the pelvis is not flat like chimpanzee but not rounded like modern day pelvis) : lucy 40% complete of an individual: erectus (homo erectus)
