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CAS AN 102 Study Guide - Final Guide: Omnivore, Heterodont, Haplorhini

2 Pages
72 Views
Winter 2013

Department
Anthropology
Course Code
CAS AN 102
Professor
All
Study Guide
Final

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Primates
Human dental foruma: 2.1.2.3/2.1.2.3
Represents 1 quadrant
2 incisors, 1 canine, 2 premolars, molars
Teeth evolved as mechanisms that allow animals to maximize energy intake
Primate teeth are heterodont - a varied pattern of differently shapes teeth
Bunodont (apes)
Bilophodont (OWM)
Primate characteristics
Generalized mammals
Limbs and locomotion
Tendency toward upright posture
Flexible, generalized limb structure
Prehensile hands
5 digits on the hands and feet
Opposable thumb and big toe
Nails instead of claws
Tactile pads with enhanced sensory innervation
Diet and teeth
Generalized dentition
Lack of dietary specialization (omnivory)
Food preferences
Enhanced vision
Color vision (diurnal primates)
Depth perception (Visual Predation Theory to catch prey)
Forward facing eyes
Visual information transmitted ot both hemispheres of brain
Visual system organized in 3D images in brain
Reduced olfaction (smaller nose, loss of rhinarium in haplorhines, smaller olfactory
area of brain)
Expansion and increased complexity of brain
More efficient means of fetal nourishment, longer, gestation, reduced number of
offspring, delayed maturation, slow life history
Greater dependence on flexible, learned behavior
Tendency to live in social groups
Tendency toward diurnal patterns
Strepshirines
%Lemurs, lorises, galagos
%Tooth comb (used for grooming)
%Rhinarium (wet nose)
%Smaller relative brain size
%Have post-orbital bars, not post-orbital septa

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Description
Primates Human dental foruma: 2.1.2.3/2.1.2.3 Represents 1 quadrant 2 incisors, 1 canine, 2 premolars, molars Teeth evolved as mechanisms that allow animals to maximize energy intake Primate teeth are heterodont - a varied pattern of differently shapes teeth Bunodont (apes) Bilophodont (OWM) Primate characteristics ▪ Generalized mammals ▪ Limbs and locomotion ⁃ Tendency toward upright posture ⁃ Flexible, generalized limb structure ⁃ Prehensile hands ⁃ 5 digits on the hands and feet ⁃ Opposable thumb and big toe ⁃ Nails instead of claws ⁃ Tactile pads with enhanced sensory innervation ▪ Diet and teeth ⁃ Generalized dentition ⁃ Lack of dietary specialization (omnivory) ⁃ Food preferences ▪ Enhanced vision ⁃ Color vision (diurnal primates) ⁃ Depth perception (Visual Predation Theory to catch prey) ⁃ Forward facing eyes ⁃ Visual information transmitted ot both hemispheres of brain ⁃ Visual system organized in 3D images in brain ▪ Reduced olfaction (smaller nose, loss of rhinarium in haplorhines, smaller olfactory area of brain) ▪ Expansion and increased complexity of brain ▪ More efficient means of fetal nourishment, longer, gestation, reduced number of offspring, delayed maturation, slow life history
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