HONORS 232 Lecture 15: Lecture 15 Notes
Document Summary
Lecture 15: tool use, common in pan (especially troglodytes), capuchin monkeys (especially sapajus), and pongo i. Gorillas can learn in captivity: mostly used for extractive foraging, often requires making or modifying raw material (except lithics, tool use varies among populations, provide evidence that non-human primates have culture i. Decreased torsion extends the rom at the shoulder, which allows for more elastic energy storage during the cocking phase: humans have a more laterally oriented glenohumeral joint. In chimps, the cranial orientation requires them to abduct their humeri more than humans to bring their arm in line with the pectoralis major flexation movement. However, this increased abduction would force chimps to position their elbow in a more extended posture to maximize the arm"s movement of inertia, resulting in a costly reduction in elbow extension during the throw. ii. These were all in place in homo erectus by around 2 ma: squeeze grip i.
