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ANTH 102 Characteristics of Primates Notes

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  • September 10, 2024
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  • 2019/2020
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  • Prof. raquel
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ANT102 Fall 2019
2.2. Characteristics of Living Primates

Introduction to Non-Human Primates

Why do we study primates?
• We share many aspects of our morphology, physiology and development with other primates

Homology: Traits similar because of common ancestry
• Wild chimpanzees
o make tools
o hunt animals
o live in male-bonded groups
o Captive chimpanzees can acquire basic human language skills

Analogy: Similar traits through convergent evolution
• Baboons live in similar environments to early hominins
-Food sources
-Selective pressures acting on primates living in African woodlands and grasslands

Primate Characteristics
• Grasping hands and feet
o thumb, big toe opposable
• Fingers, toes with nails, not claws
• Sense of smell reduced
• Visual sense well-developed
• Small litters, gestation & juvenile periods long
• Unspecialized molars
• Large brains

Primate Adult Dentition
• Incisors--flat--used for nipping
• Canines--slashing, shearing (in humans similar to incisors)
• Premolars--puncturing, some grinding
• Molars—Grinding
• Humans have same dental formula as OW monkeys, apes

Tropical Distribution of Primates
In the past there were nonhuman primates in North America and Europe, conditions were tropical in these
regions
Today primates are found in Central and South America, Asia, Africa, Madagascar

Old vs New Classification
- OLD:
• Prosimians
o Lemurs
o Lorises
o Galagos
o Tarsiers
• Anthropoids
o New World Monkeys (Platyrrhines)
o Old World Monkeys (Catarrhines)
o Apes
o Humans

- NEW
• Strepshirines
o Lemurs

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