ANTHROP 1AA3 Lecture Notes - Lecture 6: Foramen Magnum, Bipedalism, Australopithecus

• School: McMaster University
• Department: Anthropology
• Course: ANTHROP 1AA3
• Professor: Andrew Wade

Document Summary

Physical sciences (e. g. , geology); biological sciences; and social sciences. Organic material (e. g. bone) is replaced by mineral from surrounding soil (petrifacion) Ape like skull, primiive but fully hominid teeth, thinner enamel. Fossilized plant and animal remains show forest environmental ethiopia. S-shaped, keeps botom part of the body balanced. Shape of pelvis, blades of pelvis are shorter, broad and low. Angle of the femur , angled inward keep the balance of the body. Big toe enlarged and not in-cline with other toes. No- earliest tools to date was 2. 5 mya. Enhanced heat loss* important think in a equatorial habitat (loss of body hair, sweat glands) Many diferent species recognized: anamensis, afarensis, africanus, garhi, aethiopicus. Found exclusively in east and south africa (so far) Features on skull adapted for chewing tough foods. Homo= larger dependency on culture and larger brains. Less sexual dimorphism (less diferences between males and females) Saggal keel (more of a point on skull)