ANT101H5 Lecture 5: LEC #5&6 (Primates)
Document Summary
Lecture #5&6 primates: the study of non-human primate biology & behaviour. Analogies: structures that are superficially similar. Do not pass through similar stages during embryonic development. Organisms do not share a common ancestor. Homologies: structures possessed by 2 different organisms that arise in a similar fashion. Pass through similar stages during embryonic development. We can eat a variety of foods, rather than just meat. Skull features: high vaulted cranium (would roll forward on the floor, forward shifted foramen magnum. Where the spine attaches to the bottom of the head: reduced snout, post orbital bar (enclosed eye socket) Look at a skull from the side and if you notice a complete bone coming out from the side of the eye, it is a mammal. Pentadctyly (possessing 5 digits: prehensibility (knowing how to use those 5 digits) Reduction in the number of offspring born at one time to a female. Longer period of infant dependency on the mother.
