ANTA01H3 Lecture Notes - Lecture 3: Catarrhini, Brachiation, Hominidae
Document Summary
Grasping extremities: thumbs, big toe, nails instead of claws. Visual features at the expense of the nose: stereoscopic vision. The visual fields of the two eyes overlap. Not required to tell distance, parallax works too. Is useful for telling distances close to your face: postorbital bar. Isolates your eyes from muscles which makes it move less. Mostly arboreal: live in farms, tropical forest. Life history traits: long gestation, long period of infant dependency, k selected relative to other mammals. Prosimian (pre-ape: relatively smaller brains to other primates, more nose originated, lemurs they form an adaptive radiation they do things different to compete. Modern lemurs have smaller heads sifaka specialized for vertical clinging and leaping. Specialized into eating smelly and nasty bugs: galago. More related to us, anthropoids but behaviourally like prosimians. Males are bigger and have colourful butts and faces. Can live where it snows: lesser apes (gibbon) They walk on their heels when holding tools.
