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A new basal sauropodiform dinosaur from the Lower Jurassic of Yunnan Province, China

The Lufeng Formation in Lufeng Basin of Yunnan Province, southwestern China preserves one of the richest terrestrial Lower Jurassic vertebrate faunas globally, especially for its basal sauropodomorphs, such as Lufengosaurus and Yunnanosaurus. Here we report a new taxon, Xingxiulong chengi gen. et sp...

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Autores principales: Wang, Ya-Ming, You, Hai-Lu, Wang, Tao
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group 2017
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5312170/
https://www.ncbi.nlm.nih.gov/pubmed/28205592
http://dx.doi.org/10.1038/srep41881
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author Wang, Ya-Ming
You, Hai-Lu
Wang, Tao
author_facet Wang, Ya-Ming
You, Hai-Lu
Wang, Tao
author_sort Wang, Ya-Ming
collection PubMed
description The Lufeng Formation in Lufeng Basin of Yunnan Province, southwestern China preserves one of the richest terrestrial Lower Jurassic vertebrate faunas globally, especially for its basal sauropodomorphs, such as Lufengosaurus and Yunnanosaurus. Here we report a new taxon, Xingxiulong chengi gen. et sp. nov. represented by three partial skeletons with overlapping elements. Xingxiulong possesses a number of autapomorphies, such as transversely expanded plate-like summit on top of the neural spine of posterior dorsal vertebrae, four sacral vertebrae, robust scapula, and elongated pubic plate approximately 40% of the total length of the pubis. Phylogenetic analysis resolves Xingxiulong as a basal member of Sauropodiformes, and together with another two Lufeng basal sauropodiforms Jingshanosaurus and Yunnanosaurus, they represent the basalmost lineages of this clade, indicating its Asian origin. Although being relatively primitive, Xingxiulong displays some derived features normally occurred in advanced sauropodiforms including sauropods, such as a four sacral-sacrum, a robust scapula, and a pubis with elongated pubic plate. The discovery of Xingxiulong increases the diversity of basal sauropodomorphs from the Lufeng Formation and indicates a more complicated scenario in the early evolution of sauropodiforms.
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spelling pubmed-53121702017-02-23 A new basal sauropodiform dinosaur from the Lower Jurassic of Yunnan Province, China Wang, Ya-Ming You, Hai-Lu Wang, Tao Sci Rep Article The Lufeng Formation in Lufeng Basin of Yunnan Province, southwestern China preserves one of the richest terrestrial Lower Jurassic vertebrate faunas globally, especially for its basal sauropodomorphs, such as Lufengosaurus and Yunnanosaurus. Here we report a new taxon, Xingxiulong chengi gen. et sp. nov. represented by three partial skeletons with overlapping elements. Xingxiulong possesses a number of autapomorphies, such as transversely expanded plate-like summit on top of the neural spine of posterior dorsal vertebrae, four sacral vertebrae, robust scapula, and elongated pubic plate approximately 40% of the total length of the pubis. Phylogenetic analysis resolves Xingxiulong as a basal member of Sauropodiformes, and together with another two Lufeng basal sauropodiforms Jingshanosaurus and Yunnanosaurus, they represent the basalmost lineages of this clade, indicating its Asian origin. Although being relatively primitive, Xingxiulong displays some derived features normally occurred in advanced sauropodiforms including sauropods, such as a four sacral-sacrum, a robust scapula, and a pubis with elongated pubic plate. The discovery of Xingxiulong increases the diversity of basal sauropodomorphs from the Lufeng Formation and indicates a more complicated scenario in the early evolution of sauropodiforms. Nature Publishing Group 2017-02-16 /pmc/articles/PMC5312170/ /pubmed/28205592 http://dx.doi.org/10.1038/srep41881 Text en Copyright © 2017, The Author(s) http://creativecommons.org/licenses/by/4.0/ This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/
spellingShingle Article
Wang, Ya-Ming
You, Hai-Lu
Wang, Tao
A new basal sauropodiform dinosaur from the Lower Jurassic of Yunnan Province, China
title A new basal sauropodiform dinosaur from the Lower Jurassic of Yunnan Province, China
title_full A new basal sauropodiform dinosaur from the Lower Jurassic of Yunnan Province, China
title_fullStr A new basal sauropodiform dinosaur from the Lower Jurassic of Yunnan Province, China
title_full_unstemmed A new basal sauropodiform dinosaur from the Lower Jurassic of Yunnan Province, China
title_short A new basal sauropodiform dinosaur from the Lower Jurassic of Yunnan Province, China
title_sort new basal sauropodiform dinosaur from the lower jurassic of yunnan province, china
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5312170/
https://www.ncbi.nlm.nih.gov/pubmed/28205592
http://dx.doi.org/10.1038/srep41881
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