Anthropology

Starting with one ancestor, species begin to exhibit different morphological and physiological traits that they can perform for different environments and regions

Proposed by Grafton Elliot Smith and Frederic Wood Jones, that primates defining characteristics were adaptions to life in the trees

Express arboreal adaption, dietary plasticity, and parental investment

Versatile skeletal structure, enhanced sense of touch, enhanced sense of vision, reduced reliance on smelling and hearing, primitive and reduced number of teeth, parental investment

Different types of teeth (mammals)

One type of teeth (fish and reptiles)

How many types of teeth a species have

The total number of teeth

The space between two teeth

Refers to a premolar adapted for cutting

Dental form where upper canines are sharpened against lower third premolars

Hominoids' pattern of lower molar cusps, give Y shape

Lower molars in Old World Monkeys that have two ridges

Naked surface around nostrils, usually wet

Physical shape and appearance