KMS Institute of Vertebrate Paleontology and Paleoanthropology
| A new possible megalosauroid theropod from the Middle Jurassic Xintiangou Formation of Chongqing, People's Republic of China and its implication for early tetanuran evolution | |
Dai, Hui1; Benson, Roger2; Hu, Xufeng1; Ma, Qingyu1; Tan, Chao1; Li, Ning1; Xiao, Ming1; Hu, Haiqian1; Zhou, Yuxuan1; Wei, Zhaoying1; Zhang, Feng1; Jiang, Shan3; Li, Deliang4; Peng, Guangzhao3; Yu, Yilun5,6; Xu, Xing5,6
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| 2020-01-10 | |
| 发表期刊 | SCIENTIFIC REPORTS
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| ISSN | 2045-2322 |
| 卷号 | 10期号:1页码:16 |
| 摘要 | Tetanurae is a special group of theropod dinosaurs that originated by the late Early Jurassic. It includes several early-diverging groups of generally large-bodied predators (megalosauroids, allosauroids, tyrannosauroid coelurosaurs) as well as morphologically disparate small-bodied coelurosaurs, including birds. Aspects of the evolutionary history of tetanurans remain contested, including the topology of their deep phylogenetic divergences (among Megalosauroidea, Allosauroidea and Coelurosauria). We report a new theropod, Yunyangosaurus puanensis gen. et sp. nov., based on a fragmentary specimen recovered from the Middle Jurassic Xintiangou Formation of Chongqing, southwestern China. It shares several features uniquely with some megalosauroids (the clade of megalosaurids + spinosaurids + piatnitzkysaurids), such as prominent rims around the anterior articular surfaces of cervical centra and bifurcated anterior dorsal neural spines (present in piatnitzkysaurids). Nevertheless, it also shows several features that are rare or absent among megalosauroids and more crownward tetanurans, including prominent spinopostyzgopophyseal laminae (also present in non-tetanurans and metriacanthosaurid allosauroids), flat anterior articular surfaces of the cervical centra (also present in piatnitzkysaurids and some earlier-diverging tetanurans), and the presence of a posterior pneumatic foramen or fossa (absent in most tetanurans, but sporadically present in some cervical vertebrae of piatnitzkysaurids). Yunyangosaurus therefore presents a combination of derived and apparently primitive character states that are not seen in other theropods. This suggests that patterns of morphological evolution associated with deep tetanuran divergences were more complex than currently recognized, with implications for understanding the character evolution in theropods. |
| DOI | 10.1038/s41598-019-56959-x |
| 关键词[WOS] | DINOSAURIA ; CARNOSAUR ; XINJIANG ; SICHUAN |
| 收录类别 | SCI |
| 语种 | 英语 |
| 资助项目 | National Natural Science Foundation of China[41688103] ; National Natural Science Foundation of China[41688103] ; Natural Science Foundation of Chongqing, China[cstc2018jcyjAX0435] ; Natural Science Foundation of Chongqing, China[cstc2018jcyjAX0435] ; Postdoctoral Project of Chongqing, China[Xm2017069] ; Postdoctoral Project of Chongqing, China[Xm2017069] ; Project of Dinosaur Fossil Protection and Research of Chongqing Planning and Natural Resources Bureau[kj-2018035] ; Project of Dinosaur Fossil Protection and Research of Chongqing Planning and Natural Resources Bureau[kj-2018035] |
| WOS研究方向 | Science & Technology - Other Topics |
| WOS类目 | Multidisciplinary Sciences |
| WOS记录号 | WOS:000551344900003 |
| 出版者 | NATURE PUBLISHING GROUP |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://119.78.100.205/handle/311034/16605 |
| 专题 | 中科院古脊椎所（2000年以后） |
| 通讯作者 | Dai, Hui; Xu, Xing |
| 作者单位 | 1.Chongqing Bur Geol & Mineral Resource Explorat &, 208 Hydrogeol & Engn GeologicalTeam, Chongqing Lab Geoheritage Protect & Res, Chongqing 400700, Peoples R China 2.Univ Oxford, Dept Earth Sci, Oxford OX1 3AN, England 3.Zigong Dinosaur Museum, Zigong 643013, Sichuan, Peoples R China 4.Chongqing Inst Geol Survey, Chongqing 401122, Peoples R China 5.Chinese Acad Sci, Inst Vertebrate Paleontol & Paleoanthropol, Key Lab Vertebrate Evolut & Human Origins, Beijing 100044, Peoples R China 6.CAS Ctr Excellence Life & Paleoenvironm, Beijing, Peoples R China |
| 推荐引用方式 GB/T 7714 | Dai, Hui,Benson, Roger,Hu, Xufeng,et al. A new possible megalosauroid theropod from the Middle Jurassic Xintiangou Formation of Chongqing, People's Republic of China and its implication for early tetanuran evolution[J]. SCIENTIFIC REPORTS,2020,10(1):16. |
| APA | Dai, Hui.,Benson, Roger.,Hu, Xufeng.,Ma, Qingyu.,Tan, Chao.,...&Xu, Xing.(2020).A new possible megalosauroid theropod from the Middle Jurassic Xintiangou Formation of Chongqing, People's Republic of China and its implication for early tetanuran evolution.SCIENTIFIC REPORTS,10(1),16. |
| MLA | Dai, Hui,et al."A new possible megalosauroid theropod from the Middle Jurassic Xintiangou Formation of Chongqing, People's Republic of China and its implication for early tetanuran evolution".SCIENTIFIC REPORTS 10.1(2020):16. |
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