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Lecture – 8.docx

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University of Toronto Scarborough
Mary Silcox

03/04/2014 Lecture – 8  March 4, 2014 Diet  Diet is important to females due reproductive and for males its important family. Methods for dietary reconstruction: Morphology – Dental Microwear Stable isptopes Leaf eaters – well developed crests because leaf is hard to digest. Dentin is the softest part of the teeth and the enamel is the hardest part of the teeth.AS the teeth wears the crests become sharper but eventually cusps become more flat – will be hard to process food. (leaves) Leaf eaters tend to have larger bodies Kays Threshold – Over 500 g – Leaf eaters and under 500g – Insects eaters Insect Eaters Tend to be small animals with sharp cusps. Carnivores P4 & M1 - Carnassils with large canines Fruit eaters Bunodont Low rounded molar cusps RobustAustralopithecus -A.boisei small incisors. They are not well designed eating for leaves or meat. But they also were not peeling fruits. So there are no dental patterns to determine their diet. Neandertals Human like teeth. Reasonably thick enamel. Pluses and minuses of Morphology Liem’s Paradox – Species that eat diet that’s different from what their teeth were designed. Micro wearAnalysis Dental Micowear Analysis - Sample small area – you can a Leaf eaters – tend to have lots of scratches Hard objects – tend to have pits. Fruit eaters tend to have scratc
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