ANT203H5 Lecture Notes - Lecture 6: Callosity, Prehensile Tail, Grooming Claw
Document Summary
And further split into catarrhini and platyrrhini. Have features of haplorrhines that we share. Haplorhine characteristics: have detached upper lip. Have an elongated tarsal bone allows them to leap really far. Found in islands of south east asia. Have a unique dental formula missing one of their incisors at the bottom. Each eye is heavier than their brain. They cannot move their eyes in their sockets, have to move their head to see. Catarrhines mean downwards facing nose; most have ischial callosities; in the old world. Platyrrhines are flat nosed primates; side ways nostrils; have extra premolar; have a grasping prehensile tail (some); in the new world. Prehensile tail means you can hold 100% of your weight on the tail. Ischial callosities is like a butt pad; allows them to sit comfortably. Have claws to help them go up and down trees. Except the callimico that has the molar at the top.
