2009 Fiscal Year Final Research Report
Comparative analysis of 3-dimensional molar crown morphology of extant and fossil hominoids
| Project/Area Number |
19770215
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Single-year Grants |
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| Research Field |
Anthropology
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| Research Institution | National Museum of Nature and Science, Tokyo |
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Principal Investigator |
KONO Reiko National Museum of Nature and Science, Tokyo, 人類研究部, 研究員 (30356266)
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| Project Period (FY) |
2007 – 2009
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| Keywords | 人類学 / 進化 / 化石 / 大臼歯 / 類人猿 / 機能形態学 / エナメル質 |
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| Research Abstract |
Molar enamel thickness and crown morphology has been compared in detail for fossil and extant hominid and hominoid species. Molar morphology of the Miocene ape Chororapithecus shows a similar functional adaptation with extant gorilla. Extant two species of the genus Pan share a unique pattern of enamel distribution such that the occlusal basin enamel is remarkably thin. This pattern is not seen in the molars of Ardipithecus ramidus, a 4.4. mya hominid species.
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