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Assessment of dental ontogeny in late Miocene hipparionines from the Lamagou fauna of Fugu, Shaanxi Province, China

A collection of 28 hipparionine skull and mandible fossils with a dated age of approximately 7.4 Ma from Fugu, Shaanxi, northwestern China (belonging to Hipparion chiai and Hipparion cf. coelophyes) shows an age distribution in a successive development sequence. By observing the dentitions in these...

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Autores principales: Li, Yangfan, Deng, Tao, Hua, Hong, Li, Yongxiang, Zhang, Yunxiang
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Public Library of Science 2017
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5405952/
https://www.ncbi.nlm.nih.gov/pubmed/28445536
http://dx.doi.org/10.1371/journal.pone.0175460
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author Li, Yangfan
Deng, Tao
Hua, Hong
Li, Yongxiang
Zhang, Yunxiang
author_facet Li, Yangfan
Deng, Tao
Hua, Hong
Li, Yongxiang
Zhang, Yunxiang
author_sort Li, Yangfan
collection PubMed
description A collection of 28 hipparionine skull and mandible fossils with a dated age of approximately 7.4 Ma from Fugu, Shaanxi, northwestern China (belonging to Hipparion chiai and Hipparion cf. coelophyes) shows an age distribution in a successive development sequence. By observing the dentitions in these fossil materials, knowledge of dental ontogeny has been gained, such as the opening time of the posterior wall of post-fossettes, the displacement of the plis hypostyle, the morphologic changes of the protocone and hypocone, etc. Additionally, 4 isolated maxillary cheek teeth and 2 mandibular cheek teeth were cut into slices in the traditional manner for authentication. These discoveries indicate that both of the hipparionine species in the Lamagou fauna are Hipparion cf. chiai exactly and offer further insight into the morphologic changes that occur during dental wear in hipparionines, which may greatly promote the morphological and taxonomic study of hipparionine species.
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spelling pubmed-54059522017-05-14 Assessment of dental ontogeny in late Miocene hipparionines from the Lamagou fauna of Fugu, Shaanxi Province, China Li, Yangfan Deng, Tao Hua, Hong Li, Yongxiang Zhang, Yunxiang PLoS One Research Article A collection of 28 hipparionine skull and mandible fossils with a dated age of approximately 7.4 Ma from Fugu, Shaanxi, northwestern China (belonging to Hipparion chiai and Hipparion cf. coelophyes) shows an age distribution in a successive development sequence. By observing the dentitions in these fossil materials, knowledge of dental ontogeny has been gained, such as the opening time of the posterior wall of post-fossettes, the displacement of the plis hypostyle, the morphologic changes of the protocone and hypocone, etc. Additionally, 4 isolated maxillary cheek teeth and 2 mandibular cheek teeth were cut into slices in the traditional manner for authentication. These discoveries indicate that both of the hipparionine species in the Lamagou fauna are Hipparion cf. chiai exactly and offer further insight into the morphologic changes that occur during dental wear in hipparionines, which may greatly promote the morphological and taxonomic study of hipparionine species. Public Library of Science 2017-04-26 /pmc/articles/PMC5405952/ /pubmed/28445536 http://dx.doi.org/10.1371/journal.pone.0175460 Text en © 2017 Li et al http://creativecommons.org/licenses/by/4.0/ This is an open access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/) , which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
spellingShingle Research Article
Li, Yangfan
Deng, Tao
Hua, Hong
Li, Yongxiang
Zhang, Yunxiang
Assessment of dental ontogeny in late Miocene hipparionines from the Lamagou fauna of Fugu, Shaanxi Province, China
title Assessment of dental ontogeny in late Miocene hipparionines from the Lamagou fauna of Fugu, Shaanxi Province, China
title_full Assessment of dental ontogeny in late Miocene hipparionines from the Lamagou fauna of Fugu, Shaanxi Province, China
title_fullStr Assessment of dental ontogeny in late Miocene hipparionines from the Lamagou fauna of Fugu, Shaanxi Province, China
title_full_unstemmed Assessment of dental ontogeny in late Miocene hipparionines from the Lamagou fauna of Fugu, Shaanxi Province, China
title_short Assessment of dental ontogeny in late Miocene hipparionines from the Lamagou fauna of Fugu, Shaanxi Province, China
title_sort assessment of dental ontogeny in late miocene hipparionines from the lamagou fauna of fugu, shaanxi province, china
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5405952/
https://www.ncbi.nlm.nih.gov/pubmed/28445536
http://dx.doi.org/10.1371/journal.pone.0175460
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