The largest theropod track site in Yunnan, China: a footprint assemblage from the Lower Jurassic Fengjiahe Formation
文献类型：期刊论文
| 作者 | Li, Hongqing5; Fabregues, Claire Peyre de5; Bi, Shundong4,5; Wang, Yi3; Xu, Xing1,2
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| 刊名 | PEERJ
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| 出版日期 | 2021-10-05 |
| 卷号 | 9页码:32 |
| 关键词 | Theropoda Grallator Kayentapus Jurassic Lower Jurassic Fengjiahe Yunnan China Ichnotaxonomy Tracks |
| ISSN号 | 2167-8359 |
| DOI | 10.7717/peerj.11788 |
| 通讯作者 | Fabregues, Claire Peyre de(claire.pdf@gmail.com) |
| 英文摘要 | Yunnan Province is famous for its diversified Lufeng vertebrate faunas containing many saurischian dinosaur remains. In addition to the body fossil record, dinosaur ichnofossils have also been discovered in Yunnan, and the number of published track sites is on the rise. We report a theropod assemblage from the Lower Jurassic Fengjiahe Formation in Xiyang, central Yunnan. It is the third report and description of dinosaur footprints from the Fengjiahe Formation, and this new track site is the largest in number of footprints for theropods in Yunnan. Over one hundred footprints are preserved on different layers of a claystone-dominated succession close to the Lower-Middle Jurassic boundary. The track area is referred to as a lacustrine shallow-water paleoenvironment. Tracks vary in size, morphology, and preservation. All are tridactyl and digitigrade, and some are identified as undertracks. The best preserved footprints were divided into three morphotypes: morphotype A ( 21 cm) resembling Grallator; morphotype B ( 27 cm-<30 cm) identified as Kayentapus xiaohebaensis; and morphotype C, an isolated footprint (39 cm) referred to the ichnogenus Kayentapus. Although footprint shape is influenced by many factors, biotic or abiotic, morphological differences among tracks such as size, divarication angles and proportions imply that at least three different kinds of theropods were visiting this site frequently. Theropod body fossils found in the surrounding area, such as Sinosaurus, turn out to be similar in body size to the projected size estimated from footprint lengths at the track site. In Yunnan, discoveries of theropod body fossils are rare. In that respect, the track record is a useful diversity indicator which can help to encompass theropod diversity patterns. Broadly speaking, large predators (five meters long or more) were uncommon in Early Jurassic ecosystems. Accordingly, large tracks are scarce on the track site, but not absent. Trackmakers of all sizes presumably coexisted in this tropical Jurassic ecosystem, and were regularly drawn to the track site in search of water or food resources. |
| WOS关键词 | CHUANJIE FORMATION ; DINOSAUR TRACKS ; PROVINCE ; PRESERVATION ; SAUROPOD ; BASIN ; THERIZINOSAUR ; CONSISTENCY ; EUBRONTES ; BEHAVIOR |
| 资助项目 | Yunnan Science & Technology Department[2018FY001-005] ; Yunnan University[2018FY001-005] ; China-Myanmar Joint Laboratory for Ecological and Environmental Conservation |
| WOS研究方向 | Science & Technology - Other Topics |
| 语种 | 英语 |
| WOS记录号 | WOS:000707243100003 |
| 出版者 | PEERJ INC |
| 资助机构 | Yunnan Science & Technology Department ; Yunnan University ; China-Myanmar Joint Laboratory for Ecological and Environmental Conservation |
| 源URL | [http://119.78.100.205/handle/311034/18921]  |
| 专题 | 古脊椎动物与古人类研究所_图书馆1 |
| 通讯作者 | Fabregues, Claire Peyre de |
| 作者单位 | 1.Chinese Acad Sci, Ctr Excellence Life & Paleoenvironm, Beijing, Peoples R China 2.Chinese Acad Sci, Inst Vertebrate Paleontol & Paleoanthropol, Key Lab Vertebrate Evolut & Human Origins, Beijing, Peoples R China 3.Yuxi Museum, Yuxi, Yunnan, Peoples R China 4.Indiana Univ Penn, Dept Biol, Indiana, PA 15705 USA 5.Yunnan Univ, Ctr Vertebrate Evolutionary Biol, Kunming, Yunnan, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, Hongqing,Fabregues, Claire Peyre de,Bi, Shundong,et al. The largest theropod track site in Yunnan, China: a footprint assemblage from the Lower Jurassic Fengjiahe Formation[J]. PEERJ,2021,9:32. |
| APA | Li, Hongqing,Fabregues, Claire Peyre de,Bi, Shundong,Wang, Yi,&Xu, Xing.(2021).The largest theropod track site in Yunnan, China: a footprint assemblage from the Lower Jurassic Fengjiahe Formation.PEERJ,9,32. |
| MLA | Li, Hongqing,et al."The largest theropod track site in Yunnan, China: a footprint assemblage from the Lower Jurassic Fengjiahe Formation".PEERJ 9(2021):32. |
入库方式： OAI收割
来源：古脊椎动物与古人类研究所
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