ANTA01H3 Lecture Notes - Lecture 8: Ibm 7090, Orrorin, Tugen Hills
Document Summary
Anta01 lecture 8 australopithecines & their ancestors. Today"s objectives: early hominid traits & early species. We can see how big the animal is and what the animal ate by looking at teeth: most post-cranial material don"t survive. Animals that weren"t immediately buried: we have to use anatomical features to distinguish hominins from fossil apes, specific adaptations like evidence of bipedalism and dentition. Hominin dentition: anything with human like traits or intermediate traits are hominins, ape-like traits were apes not hominins, some dental traits, dental arcade. In humans: there is a parabolic arch (we have smaller teeth overall) In apes: broader in the front and it is more u-shaped because they have larger canines. In early hominins: something in between humans and apes smaller anterior dentition than an ape but it is still u-shaped. Face shapes (prognathism where the lower face is sticking out: humans have a flatter face, tooth size and shape.
