ANTA01H3 Chapter Notes - Chapter 6: Colobinae, Rhinarium, Congo River
Document Summary
230 species of non human primates (lemurs, lories, tarsiers, monkeys, apes) Primates have been quite generalized ; retained several ancestral mammalian traits. Limb and locomotion: a tendency toward an erect posture (especially in the upper body) Sitting, leaping, standing, occasionally bipedal walking: flexible, generalized limb structure allows most primates to practice various locomotor behavr. Rotation of the forearm lost in mammals such as horses, hip/shoulder anatomy: prehensile hands (and sometimes feet) Diet and teeth: lack of dietary specialization. Primates active on the day rely more on vision and less on smell; reflected in evolutionary changes in the skill, eyes and brain: color vision. Diurnal primates active in day nocturnal active during night don"t have this: depth perception. Reduction of olfactory structures in the brain which results in decrease of the size of the snout related to increase dependence on vision. Baboon have large muzzles but not related to olfaction but to accommodate large teeth.
