ANTH 1 Chapter Notes - Chapter 6: Wilfrid Le Gros Clark, Dentition, Premolar
Document Summary
Sir wilfrid e. le gros clark identified 3 tendencies: Potto, a prosimian, has primitive dermal ridges, whereas the human, a higher primate, has more derived ridges = better gripping ability. Enhanced sense of vision: inc depth perception & color. Reduced sense of smell bc of smaller & less projecting snouts => dec reliance on smell. Loss of rhinarium - external wet nose: dietary versatility: Dental formula: numerical description of a species teeth, listing number, in one quadrant of the jaws, of incisors, canines, premolars, and molars. Early mammalian ancestor: 3/1/4/3 formula - 3 incisors 1 canine 4 premolars 3 molars in 1 quadrant of definition. *primates have evolved diff dental specializations and functional emphasis. Old world monkeys - 4 cusps on upper and lower molars. Each pair of cusps connected by enamel ridge( loph) = bilophodont molar. Tooth comb: anterior teeth (incisors and canines) that have been tilted forward, creating a scraper.