New fossils of Australopithecus anamensis from Kanapoi, West Turkana, Kenya (2003-2008).
Identifieur interne : 000175 ( PubMed/Corpus ); précédent : 000174; suivant : 000176New fossils of Australopithecus anamensis from Kanapoi, West Turkana, Kenya (2003-2008).
Auteurs : C V Ward ; F K Manthi ; J M PlavcanSource :
- Journal of human evolution [ 1095-8606 ] ; 2013.
English descriptors
- KwdEn :
- MESH :
- geographic : Kenya.
- anatomy & histology : Hominidae, Mandible, Tooth.
- Analysis of Variance, Animals, Anthropology, Physical, Biological Evolution, Female, Fossils, Male, Odontometry.
Abstract
Renewed fieldwork from 2003 through 2008 at the Australopithecus anamensis type-site of Kanapoi, Kenya, yielded nine new fossils attributable to this species. These fossils all date to between 4.195 and 4.108 million years ago. Most were recovered from the lower fluvial sequence at the site, with one from the lacustrine sequence deltaic sands that overlie the lower fluvial deposits but are still below the Kanapoi Tuff. The new specimens include a partial edentulous mandible, partial maxillary dentition, two partial mandibular dentitions, and five isolated teeth. The new Kanapoi hominin fossils increase the sample known from the earliest Australopithecus, and provide new insights into morphology within this taxon. They support the distinctiveness of the early A. anamensis fossils relative to earlier hominins and to the later Australopithecus afarensis. The new fossils do not appreciably extend the range of observed variation in A. anamensis from Kanapoi, with the exception of some slightly larger molars, and a canine tooth root that is the largest in the hominin fossil record. All of the Kanapoi hominins share a distinctive morphology of the canine-premolar complex, typical early hominin low canine crowns but with mesiodistally longer honing teeth than seen in A. afarensis, and large, probably dimorphic, canine tooth roots. The new Kanapoi specimens support the observation that canine crown height, morphology, root size and dimorphism were not altered from a primitive ape-like condition as part of a single event in human evolution, and that there may have been an adaptive difference in canine function between A. anamensis and A. afarensis.
DOI: 10.1016/j.jhevol.2013.05.006
PubMed: 23998457
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Electronic address: Wardcv@missouri.edu.</nlm:affiliation></affiliation></author><author><name sortKey="Manthi, F K" sort="Manthi, F K" uniqKey="Manthi F" first="F K" last="Manthi">F K Manthi</name></author><author><name sortKey="Plavcan, J M" sort="Plavcan, J M" uniqKey="Plavcan J" first="J M" last="Plavcan">J M Plavcan</name></author></titleStmt><publicationStmt><idno type="wicri:source">PubMed</idno><date when="2013">2013</date><idno type="RBID">pubmed:23998457</idno><idno type="pmid">23998457</idno><idno type="doi">10.1016/j.jhevol.2013.05.006</idno><idno type="wicri:Area/PubMed/Corpus">000175</idno><idno type="wicri:explorRef" wicri:stream="PubMed" wicri:step="Corpus" wicri:corpus="PubMed">000175</idno></publicationStmt><sourceDesc><biblStruct><analytic><title xml:lang="en">New fossils of Australopithecus anamensis from Kanapoi, West Turkana, Kenya (2003-2008).</title><author><name sortKey="Ward, C V" sort="Ward, C V" uniqKey="Ward C" first="C V" last="Ward">C V Ward</name><affiliation><nlm:affiliation>Department of Pathology and Anatomical Sciences, M263 Medical Sciences Building, University of Missouri, Columbia, MO 65212, USA. 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These fossils all date to between 4.195 and 4.108 million years ago. Most were recovered from the lower fluvial sequence at the site, with one from the lacustrine sequence deltaic sands that overlie the lower fluvial deposits but are still below the Kanapoi Tuff. The new specimens include a partial edentulous mandible, partial maxillary dentition, two partial mandibular dentitions, and five isolated teeth. The new Kanapoi hominin fossils increase the sample known from the earliest Australopithecus, and provide new insights into morphology within this taxon. They support the distinctiveness of the early A. anamensis fossils relative to earlier hominins and to the later Australopithecus afarensis. The new fossils do not appreciably extend the range of observed variation in A. anamensis from Kanapoi, with the exception of some slightly larger molars, and a canine tooth root that is the largest in the hominin fossil record. All of the Kanapoi hominins share a distinctive morphology of the canine-premolar complex, typical early hominin low canine crowns but with mesiodistally longer honing teeth than seen in A. afarensis, and large, probably dimorphic, canine tooth roots. The new Kanapoi specimens support the observation that canine crown height, morphology, root size and dimorphism were not altered from a primitive ape-like condition as part of a single event in human evolution, and that there may have been an adaptive difference in canine function between A. anamensis and A. afarensis.</div></front></TEI><pubmed><MedlineCitation Status="MEDLINE" Owner="NLM"><PMID Version="1">23998457</PMID><DateCompleted><Year>2014</Year><Month>05</Month><Day>12</Day></DateCompleted><DateRevised><Year>2013</Year><Month>10</Month><Day>16</Day></DateRevised><Article PubModel="Print-Electronic"><Journal><ISSN IssnType="Electronic">1095-8606</ISSN><JournalIssue CitedMedium="Internet"><Volume>65</Volume><Issue>5</Issue><PubDate><Year>2013</Year><Month>Nov</Month></PubDate></JournalIssue><Title>Journal of human evolution</Title><ISOAbbreviation>J. Hum. 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The new Kanapoi hominin fossils increase the sample known from the earliest Australopithecus, and provide new insights into morphology within this taxon. They support the distinctiveness of the early A. anamensis fossils relative to earlier hominins and to the later Australopithecus afarensis. The new fossils do not appreciably extend the range of observed variation in A. anamensis from Kanapoi, with the exception of some slightly larger molars, and a canine tooth root that is the largest in the hominin fossil record. All of the Kanapoi hominins share a distinctive morphology of the canine-premolar complex, typical early hominin low canine crowns but with mesiodistally longer honing teeth than seen in A. afarensis, and large, probably dimorphic, canine tooth roots. The new Kanapoi specimens support the observation that canine crown height, morphology, root size and dimorphism were not altered from a primitive ape-like condition as part of a single event in human evolution, and that there may have been an adaptive difference in canine function between A. anamensis and A. afarensis.</AbstractText><CopyrightInformation>Copyright © 2013 Elsevier Ltd. All rights reserved.</CopyrightInformation></Abstract><AuthorList CompleteYN="Y"><Author ValidYN="Y"><LastName>Ward</LastName><ForeName>C V</ForeName><Initials>CV</Initials><AffiliationInfo><Affiliation>Department of Pathology and Anatomical Sciences, M263 Medical Sciences Building, University of Missouri, Columbia, MO 65212, USA. Electronic address: Wardcv@missouri.edu.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Manthi</LastName><ForeName>F K</ForeName><Initials>FK</Initials></Author><Author ValidYN="Y"><LastName>Plavcan</LastName><ForeName>J M</ForeName><Initials>JM</Initials></Author></AuthorList><Language>eng</Language><PublicationTypeList><PublicationType UI="D016428">Journal Article</PublicationType><PublicationType UI="D013485">Research Support, Non-U.S. Gov't</PublicationType></PublicationTypeList><ArticleDate DateType="Electronic"><Year>2013</Year><Month>08</Month><Day>30</Day></ArticleDate></Article><MedlineJournalInfo><Country>England</Country><MedlineTA>J Hum Evol</MedlineTA><NlmUniqueID>0337330</NlmUniqueID><ISSNLinking>0047-2484</ISSNLinking></MedlineJournalInfo><CitationSubset>IM</CitationSubset><MeshHeadingList><MeshHeading><DescriptorName UI="D000704" MajorTopicYN="N">Analysis of Variance</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D000818" MajorTopicYN="N">Animals</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D000885" MajorTopicYN="N">Anthropology, Physical</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D005075" MajorTopicYN="N">Biological Evolution</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D005260" MajorTopicYN="N">Female</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D005580" MajorTopicYN="Y">Fossils</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D015186" MajorTopicYN="N">Hominidae</DescriptorName><QualifierName UI="Q000033" MajorTopicYN="Y">anatomy & histology</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D007630" MajorTopicYN="N" Type="Geographic">Kenya</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D008297" MajorTopicYN="N">Male</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D008334" MajorTopicYN="N">Mandible</DescriptorName><QualifierName UI="Q000033" MajorTopicYN="Y">anatomy & histology</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D009811" MajorTopicYN="N">Odontometry</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D014070" MajorTopicYN="N">Tooth</DescriptorName><QualifierName UI="Q000033" MajorTopicYN="Y">anatomy & histology</QualifierName></MeshHeading></MeshHeadingList><KeywordList Owner="NOTNLM"><Keyword MajorTopicYN="N">Australopithecus anamensis</Keyword><Keyword MajorTopicYN="N">Dentition</Keyword><Keyword MajorTopicYN="N">Kanapoi</Keyword><Keyword MajorTopicYN="N">New fossils</Keyword></KeywordList></MedlineCitation><PubmedData><History><PubMedPubDate PubStatus="received"><Year>2013</Year><Month>01</Month><Day>29</Day></PubMedPubDate><PubMedPubDate PubStatus="revised"><Year>2013</Year><Month>05</Month><Day>06</Day></PubMedPubDate><PubMedPubDate PubStatus="accepted"><Year>2013</Year><Month>05</Month><Day>07</Day></PubMedPubDate><PubMedPubDate PubStatus="entrez"><Year>2013</Year><Month>9</Month><Day>4</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="pubmed"><Year>2013</Year><Month>9</Month><Day>4</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="medline"><Year>2014</Year><Month>5</Month><Day>13</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate></History><PublicationStatus>ppublish</PublicationStatus><ArticleIdList><ArticleId IdType="pubmed">23998457</ArticleId><ArticleId IdType="pii">S0047-2484(13)00143-7</ArticleId><ArticleId IdType="doi">10.1016/j.jhevol.2013.05.006</ArticleId></ArticleIdList></PubmedData></pubmed></record>Pour manipuler ce document sous Unix (Dilib)
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