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A distinguishing feature of Pongo upper molars and its implications for the taxonomic identification of isolated hominid teeth from the Pleistocene of Asia
Ortiz, Alejandra1,2; Bailey, Shara E.1,3; Delgado, Miguel4,5,6,7,8; Zanolli, Clement9; Demeter, Fabrice10,11; Bacon, Anne-Marie12; Nguyen, Thi M. H.13; Nguyen, Anh T.13; Zhang, Yingqi14,15; Harrison, Terry1; Hublin, Jean-Jacques3; Skinner, Matthew M.3,16,17
2019-12-01
Source PublicationAMERICAN JOURNAL OF PHYSICAL ANTHROPOLOGY
ISSN0002-9483
Volume170Issue:4Pages:595-612
Abstract

Objectives The taxonomic status of isolated hominoid teeth from the Asian Pleistocene has long been controversial due to difficulties distinguishing between pongine and hominin molars given their high degree of morphometrical variation and overlap. Here, we combine nonmetric and geometric morphometric data to document a dental pattern that appears to be taxonomically diagnostic among Pongo. We focus on the protoconule, a cuspule of well-documented evolutionary history, as well as on shape differences of the mesial fovea of the upper molars. Materials and methods We examined 469 upper molars of eight hominid genera (Australopithecus, Paranthropus, Homo, Meganthropus, Sivapithecus, Pan, Gorilla, and Pongo), including representatives of Homo erectus and extinct and recent Pongo. Analyses were conducted at the enamel-dentine junction to overcome the limitations introduced by dental wear. Results We found that a moderate or large protoconule is present in similar to 80% of Pleistocene and extant Pongo. Conversely, a moderate to pronounced protoconule in hominins, Meganthropus, and African great apes occurs in low frequencies (similar to 0-20%). Canonical variate analyses for the mesial fovea show that Pleistocene and extant Pongo cluster together and are clearly differentiated from all other groups, except for Sivapithecus. Discussion This study suggests that the protoconule and the shape of the mesial fovea in upper molars are useful features for the taxonomic identification of isolated hominid teeth. By identifying these new features, our results can contribute to the better understanding of hominoid evolutionary history and biogeography during the Asian Pleistocene. However, we emphasize that the reported features should be used in combination with other diagnostic variables for the most accurate taxonomic assessments.

Keywordenamel-dentine junction hominids mesial fovea protoconule taxonomy
DOI10.1002/ajpa.23928
Language英语
WOS KeywordENAMEL-DENTIN JUNCTION ; MIDDLE MIOCENE ; HOMO-ERECTUS ; PHYLOGENETIC-RELATIONSHIPS ; GIGANTOPITHECUS-BLACKI ; CATARRHINE PRIMATES ; FOSSIL ORANGUTAN ; NORTHERN VIETNAM ; TOOTH MORPHOLOGY ; 1ST DISCOVERY
Funding ProjectChinese Academy of Sciences[XDB26000000] ; Leakey Foundation ; Max Planck Society ; National Science Foundation[1341148] ; New York University ; PICS-CNRS 2011-2013[5712] ; Wenner-Gren Foundation
WOS Research AreaAnthropology ; Evolutionary Biology
WOS SubjectAnthropology ; Evolutionary Biology
WOS IDWOS:000492436000001
Funding OrganizationChinese Academy of Sciences ; Leakey Foundation ; Max Planck Society ; National Science Foundation ; New York University ; PICS-CNRS 2011-2013 ; Wenner-Gren Foundation
PublisherWILEY
Citation statistics
Document Type期刊论文
Identifierhttp://ir.nigpas.ac.cn/handle/332004/29092
Collection中国科学院南京地质古生物研究所
Corresponding AuthorOrtiz, Alejandra
Affiliation1.NYU, Dept Anthropol, New York, NY 10003 USA
2.Arizona State Univ, Inst Human Origins, Sch Human Evolut & Social Change, Tempe, AZ USA
3.Max Planck Inst Evolutionary Anthropol, Dept Human Evolut, Leipzig, Germany
4.Univ Nacl La Plata, Fac Ciencias Nat & Museo, Div Antropol, La Plata, Buenos Aires, Argentina
5.Consejo Nacl Invest Cient & Tecn, Buenos Aires, DF, Argentina
6.Fudan Univ, Minist Educ, Key Lab Contemporary Anthropol, Shanghai, Peoples R China
7.Fudan Univ, Sch Life Sci, Collaborat Innovat Ctr Genet & Dev, Shanghai, Peoples R China
8.Fudan Univ, Human Phenome Inst, Shanghai, Peoples R China
9.Univ Bordeaux, CNRS, Lab PACEA, UMR 5199, Bordeaux, France
10.Musee Homme Paris, Dept Homme & Environm, UMR7206, Paris, France
11.Univ Copenhagen, Globe Inst, Lundbeck Fdn GeoGenet Ctr, Copenhagen, Denmark
12.Univ Paris 05, Fac Chirurg Dent, Lab BABEL, FRE 2029,CNRS, Montrouge, France
13.Inst Archaeol, Anthropol & Palaeoenvironm Dept, Hanoi, Vietnam
14.Chinese Acad Sci, IVPP, Key Lab Vertebrate Evolut & Human Origins, Beijing, Peoples R China
15.Chinese Acad Sci, Nanjing Inst Geol & Palaeontol, State Key Lab Palaeobiol & Stratig, Nanjing, Jiangsu, Peoples R China
16.Univ Kent, Sch Anthropol & Conservat, Canterbury, Kent, England
17.Univ Witwatersrand, Evolutionary Studies Inst, Johannesburg, South Africa
Recommended Citation
GB/T 7714
Ortiz, Alejandra,Bailey, Shara E.,Delgado, Miguel,et al. A distinguishing feature of Pongo upper molars and its implications for the taxonomic identification of isolated hominid teeth from the Pleistocene of Asia[J]. AMERICAN JOURNAL OF PHYSICAL ANTHROPOLOGY,2019,170(4):595-612.
APA Ortiz, Alejandra.,Bailey, Shara E..,Delgado, Miguel.,Zanolli, Clement.,Demeter, Fabrice.,...&Skinner, Matthew M..(2019).A distinguishing feature of Pongo upper molars and its implications for the taxonomic identification of isolated hominid teeth from the Pleistocene of Asia.AMERICAN JOURNAL OF PHYSICAL ANTHROPOLOGY,170(4),595-612.
MLA Ortiz, Alejandra,et al."A distinguishing feature of Pongo upper molars and its implications for the taxonomic identification of isolated hominid teeth from the Pleistocene of Asia".AMERICAN JOURNAL OF PHYSICAL ANTHROPOLOGY 170.4(2019):595-612.
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