Phys A L10 - Physical Anthropology Lecture 10(Chapter 5 I...

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10/31/2007 Physical Anthropology: Lecture 10 (Chapter 5) I. The Prosimians/Strepsirhini (Primitive Primates) A. General Features 1. Large face, small braincase, elongated snout, slender, procumbent mandible with low ramus of mandible (but not loris and tarsiers) 2. Unfused metopic structure and mandibular symphysis 3. Bony orbit not enclosed 4. Iacrimal (tears) bones and duct extend externally/anteriorly to orbit B. Family Daubentoniidae (Aye-Aye, Daubentonia, Madagascariensis) 1. Nocturnal, arboreal—restricted to dense forest of bamboo 2. Dentition reduced and specialized for insectiviory—similar to rodents—covered with enamel and ever-growing 3. Originally classified as a rodent due to diastema and tooth structure 4. All digits clawed except hallux of hind food—3 rd digit slender and elongated— used to remove adult and larval insect from holes and tissues in wood C. Family Lordiae (Lorises and Pottos) 1. 4 genera, 6 species (African, India, Ceylon, SE Asia, E Indies) 2. Nocturnal and arboreal 3. Rat to squirrel size 4.
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