| Paleobiological implications of the Ardipithecus ramidus dentition. | |
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MedLine Citation:
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PMID: 19810195 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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The Middle Awash Ardipithecus ramidus sample comprises over 145 teeth, including associated maxillary and mandibular sets. These help reveal the earliest stages of human evolution. Ar. ramidus lacks the postcanine megadontia of Australopithecus. Its molars have thinner enamel and are functionally less durable than those of Australopithecus but lack the derived Pan pattern of thin occlusal enamel associated with ripe-fruit frugivory. The Ar. ramidus dental morphology and wear pattern are consistent with a partially terrestrial, omnivorous/frugivorous niche. Analyses show that the ARA-VP-6/500 skeleton is female and that Ar. ramidus was nearly monomorphic in canine size and shape. The canine/lower third premolar complex indicates a reduction of canine size and honing capacity early in hominid evolution, possibly driven by selection targeted on the male upper canine. |
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Authors:
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Gen Suwa; Reiko T Kono; Scott W Simpson; Berhane Asfaw; C Owen Lovejoy; Tim D White |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't; Research Support, U.S. Gov't, Non-P.H.S. |
Journal Detail:
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Title: Science (New York, N.Y.) Volume: 326 ISSN: 1095-9203 ISO Abbreviation: Science Publication Date: 2009 Oct |
Date Detail:
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Created Date: 2009-10-06 Completed Date: 2009-10-16 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 0404511 Medline TA: Science Country: United States |
Other Details:
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Languages: eng Pagination: 94-9 Citation Subset: IM |
Affiliation:
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University Museum, University of Tokyo, Hongo, Bunkyo-ku, Tokyo, 113-0033 Japan. suwa@um.u-tokyo.ac.jp |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Animals Cuspid / anatomy & histology Dental Enamel / anatomy & histology Dentition* Diet Ethiopia Evolution Female Fossils* Hominidae / anatomy & histology*, classification Incisor / anatomy & histology Male Molar / anatomy & histology Odontometry Paleodontology Phylogeny Sex Characteristics Tooth / anatomy & histology* Tooth Crown / anatomy & histology |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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