ANTH 1001 3-11

ANTH 1001 3-11 - 3/11 I Pongo Pygmaeus(orange-utan a...

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I. Pongo Pygmaeus (orange-utan) a. Environment – rainforest of Borneo and Sumatra (islands of Indonesia) b. Diet – frugivorY c. Locomotion i. Arboreally adapted; slow, cautious climbing in trees d. Morphology i. Arms longer than legs ii. Broad thorax iii. Mobile wrist iv. “stiff back” (i.e., few lumbar vertebrae) v. Absence of tail vi. Dental formula: 2, 1, 2, 3/2, 1, 2, 3 vii. Y-5 cusp pattern on lower molars viii.Marked sexual dimorphism in body size, with males two times larger than females ix. Prominent sagittal crest e. Behavior i. Adult male and female leads essentially solitary lifestyles, with the territory of a single male overlapping the territories of several females (noyau social structure); social unit is adult female and her dependent offspring ii. Use of tools (sticks are modified and used to open fruits and to probe for honey or termites) II. Hylobates Iar (gibbon) a. Envrionment – rainforest of Southeast Asia (e.g., China, Thailand, Vietnam, Indonesia) b. Diet – frugivory
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ANTH 1001 3-11 - 3/11 I Pongo Pygmaeus(orange-utan a...

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