Chapter 2: Primatology (not on exam) Flashcards
Primatology
The study of nonhuman primates including their behaviour and social life
Strepsirhini
Wet-nosed primates
Ex: Lemurs
Haplorhini
Dry-nosed primates
Ex: Humans & Chimpanzees
Homologies
Similarities due to a common ancestry
Ex: Opposable thumb
Analogies
Similarities due to similar selective pressures
Ex: Wings on bats, birds, bugs
Post-orbital closure
No space in the bone of the eye socket
Stereoscopic vision
2 eyes creating 1 image
Old world monkeys (Catarrhini)
Sharp-nosed monkeys
Ex: Baboons & Humans
New world monkeys (Plathyrrhini)
Flat-nosed monkeys
Ex: Tamarins
Old World dentition
2-1-2-3
New World dentition
2-1-3-3
Hominin
Bipedal hominoid (humans) Most advanced grade of primate evolution
Sexual dimorphism
Observable phenotypic differences between males and females of the same species
Lesser apes
Ex: Gibbons
*They brachiate
Great apes
Ex: Gorillas, Orangutans