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Lecture 4

ANT100Y1 Lecture Notes - Lecture 4: Tapetum Lucidum, Stereopsis, Frontal Bone

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Shawn Lehman

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Thurs. Oct. 4th/12
Lecture 4
Prime Behaviour and Ecology
Primate Characteristics
- primates are mammals (warm-blooded, having hair and feeling milk to its young)
- primates differ from most mammals by having:
- grasping hands and feet
- collarbone (clavicle)
- radius and ulna
- forward facing eyes and stereoscopic vision (allows us to have depth perception judge distance in
3dimensional space)
Primate Activity Patterns
- nocturnal: active at night
- diurnal: active during day (most primates)
- crepuscular: active at dawn and dusk (primates that love insects)
- cathemeral: active any time of day or night (depending on food availability)
Primate Taxonomy in textbook
Strepsirhine Characteristics
- dental tooth comb
- moist rhinarium (wet nose)
- unfused mandibular and frontal symphases (frontal jaw and two halfs of a frontal bone fused together)
- tapetum lucidum (device in back of eyes that reflect light so they can see in the dark)
- postorbitol bar (eye sockets)
- two superfamilies: lemuroidea and lorisoidea
- Madagascar and Comoro island
- arboreal quadrupeds and leapers; some are partially terrestrial
- many small bodied species are nocturnal
- female dominance
-varied diet
- found throughout sub Saharan Africa and SE asia
- lorises and galagos
- arboreal quadrupeds (up in trees on four legs)
- nocturnal
- varied diet
Haplorhine Characteristics
- dry nose
- retinal fovea (see colours really well)
- postorbitol closure
- fused mandibular and frontal symphases
- three infraorders: tarsiiformes, platyrrhini, and catarrhini
- one genus
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