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Unformatted text preview: 11/28/2007 Physical Anthropology: Lecture 19 (Chapter 11) I. Characters and Character States A. Characters = features 1. Supra Orbita Torus (brow ridge) 2. Mental Eminence (chin) 3. Orbit B. Character States (CORRELATE WITH ABOVE) 1. Weak/moderate/strong; glabellar eminence; curved/straight 2. Large/small, Round/square 3. Absent/weak/strong II. At the Beginning (5-7mya) A. Ardipithecus 1. Genus consists of two species: A. ramidus and A. kadadaba 2. 1992—Tim White (UC Berkeley), Berhane Asfaw, Gen Suwa found at Aramis —site in Mid Awash Basin of Ethiopia 3. 4.4 mya 4. Teeth, jaws, lower part of skull, parts of upper arm B. Ardipithecus ramidus (ardi = ground/floor), (ramus = root) in local Afar C. Species date back to between 5.2-5.8 mya III. Why Hominin? A. Anteriorly placed foramen magnum B. Derived, smaller, more incisor like canine, not honed! C. Other aspects of teeth and arm bones IV. What Are the Primitive Features A. Molars are smaller in relation to body size B. Enamel is thinner than in other early hominins C. Larger canines than other hominins but smaller than chimps and gorillas D. Deciduous molars and jaw joint similar to that of other apesD....
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- Fall '07
- Physical Anthropology, Hominidae, Hominina, Hominini, a. b. c., b. c. d., A. ramidus