A NEW SPECIMEN OF THE TRITYLODONTID BIENOTHEROIDES ZIGONGENSIS (CYNODONTIA, MAMMALIAMORPHA) FROM THE WUCAIWAN AREA OF XINJIANG, CHINA, AND PHYLOGENY OF TRITYLODONTIDAE
文献类型：期刊论文
| 作者 | Ren, Jicheng6,7; Liu, Lu8; Han, Fenglu1; Xu, Xing2,6; Clark, James M.3; Liu, Jun6; Meng, Jin4,5; Mao, Fangyuan4,6 |
| 刊名 | BULLETIN OF THE AMERICAN MUSEUM OF NATURAL HISTORY
 |
| 出版日期 | 2025-10-09 |
| 期号 | 477页码:122 |
| ISSN号 | 0003-0090 |
| DOI | 10.5531/sd.sp.77 |
| 英文摘要 | Tritylodontidae is a Mesozoic group of small to medium-sized mammaliamorph cynodonts with cosmopolitan geographic distribution and characterized by possessing three mesiodistal rows of cusps in each of their upper postcanine teeth and two rows in the lower postcanines. Abundant tritylodontid materials have been discovered in Sichuan, Xinjiang, Yunnan, and other localities in China since 1938, but detailed description of their morphologies has been wanting. This paper describes a well-preserved tritylodontid skull with both mandibles, complete dentitions, and postdentary bones. The specimen was collected from the Upper Jurassic Shishugou Formation in the Wucaiwan area of Junggar Basin, Xinjiang, China. It is assigned to Bienotheroides zigongensis because it possesses a typical characteristic combination of B. zigongensis, such as an extremely deep zygomatic arch, a greatly reduced maxilla, upper postcanine cusp formula of 2-3-3 and a quadrate with a mediodorsally directed stapedial process. Using micro-CT scan data, we are able to create threedimensional digital reconstructions and provide a complete description of the specimen. We also reconstruct the inner ear and the maxillary canal system, which provide considerable craniodental information previously unknown in Bienotheroides. These new morphological data are informative for better diagnosing the genus and reconstructing the phylogeny of tritylodontids. A revised character data matrix with 15 tritylodontid genera and 70 characters is generated based on reevaluated morphological characters, of which 23 characters are new. Our phylogenetic analysis of Tritylodontidae resulted in a better-resolved topology of the phylogenetic relationship of tritylodontids. Using this phylogenetic framework, we postulate an evolutionary pattern of tritylodontid cranial morphology unique among cynodonts, characterized by shortening of the snout and basicranial region and reduction of the maxilla. |
| WOS关键词 | JURASSIC SHISHUGOU FORMATION ; JUNGGAR BASIN ; THERAPSIDS ; ORIGIN ; EUCYNODONTIA ; MORPHOLOGY ; DIVERSITY ; SYNAPSIDA ; REVEALS ; REPTILE |
| 资助项目 | National Natural Science Foundation of China[42072002] ; Yunnan Revitalization Talent Support Program[202305AB350006] ; National Natural Science Foundation of China[42122010] ; Youth Innovation Promotion Association of the Chinese Academy of Sciences[Y2023017] |
| WOS研究方向 | Biodiversity & Conservation ; Environmental Sciences & Ecology |
| 语种 | 英语 |
| WOS记录号 | WOS:001596440700001 |
| 出版者 | AMER MUSEUM NATURAL HISTORY |
| 源URL | [http://119.78.100.205/handle/311034/24894]  |
| 专题 | 中国科学院古脊椎动物与古人类研究所 |
| 通讯作者 | Ren, Jicheng |
| 作者单位 | 1.China Univ Geosci, Sch Earth Sci, Wuhan, Peoples R China 2.Yunnan Univ, Ctr Vertebrate Evolutionary Biol, Kunming, Peoples R China 3.George Washington Univ, Dept Biol Sci, Washington, DC USA 4.CUNY, Grad Ctr, Earth & Environm Sci, New York, NY USA 5.Amer Museum Nat Hist, Div Paleontol, New York, NY USA 6.Chinese Acad Sci, Inst Vertebrate Paleontol & Paleoanthropol, Beijing, Peoples R China 7.Univ Chinese Acad Sci, Beijing, Peoples R China 8.Nat Hist Museum China, Beijing, Peoples R China |
| 推荐引用方式 GB/T 7714 | Ren, Jicheng,Liu, Lu,Han, Fenglu,et al. A NEW SPECIMEN OF THE TRITYLODONTID BIENOTHEROIDES ZIGONGENSIS (CYNODONTIA, MAMMALIAMORPHA) FROM THE WUCAIWAN AREA OF XINJIANG, CHINA, AND PHYLOGENY OF TRITYLODONTIDAE[J]. BULLETIN OF THE AMERICAN MUSEUM OF NATURAL HISTORY,2025(477):122. |
| APA | Ren, Jicheng.,Liu, Lu.,Han, Fenglu.,Xu, Xing.,Clark, James M..,...&Mao, Fangyuan.(2025).A NEW SPECIMEN OF THE TRITYLODONTID BIENOTHEROIDES ZIGONGENSIS (CYNODONTIA, MAMMALIAMORPHA) FROM THE WUCAIWAN AREA OF XINJIANG, CHINA, AND PHYLOGENY OF TRITYLODONTIDAE.BULLETIN OF THE AMERICAN MUSEUM OF NATURAL HISTORY(477),122. |
| MLA | Ren, Jicheng,et al."A NEW SPECIMEN OF THE TRITYLODONTID BIENOTHEROIDES ZIGONGENSIS (CYNODONTIA, MAMMALIAMORPHA) FROM THE WUCAIWAN AREA OF XINJIANG, CHINA, AND PHYLOGENY OF TRITYLODONTIDAE".BULLETIN OF THE AMERICAN MUSEUM OF NATURAL HISTORY .477(2025):122. |
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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