Convergent Evolution of a Eusuchian-Type Secondary Palate within Shartegosuchidae
文献类型：期刊论文
| 作者 | Dollman, Kathleen N.1,2; Clark, James M.3; Norell, Mark A.4; Xing, Xu5; Choiniere, Jonah N.1,2 |
| 刊名 | AMERICAN MUSEUM NOVITATES
 |
| 出版日期 | 2018-06-18 |
| 期号 | 3901页码:1-23 |
| 关键词 | Crocodylomorpha palatal fenestra pterygoid Ulan Malgait Formation Mongolia |
| ISSN号 | 0003-0082 |
| 通讯作者 | Dollman, Kathleen N.() |
| 英文摘要 | Shartegosuchids are a poorly known, early-branching group of Asian and North American crocodylomorphs. Shartegosuchids have been hypothesized to have eusuchian-type secondary palates, but a paucity of described material makes assessing this difficult. Our fieldwork in western Mongolia recovered cranial material of a new Shartegosuchus specimen from the Ulan Malgait Formation, which we CT-scanned and digitally reconstructed to investigate its palatal morphology. We then incorporated this new anatomical information into a revised phylogenetic dataset to assess its affinities. Our study confirms that Shartegosuchus has a posteriorly placed choana that is fully enclosed by the pterygoids, but differs from Eusuchia in possessing a secondary palatal fenestra and reduced palatine bones. Shartegosuchus, together with Adzhosuchus, Fruitachampsa, and Nominosuchus, forms the monophyletic group Shartegosuchidae. Shartegosuchidae is nested within a larger clade Shartegosuchoidea, and this clade is an earlierdiverging lineage than Eusuchia, showing that a eusuchian-type secondary palate evolved multiple times in crocodylomorphs, including very early in the group's evolutionary history. The co-occurrence of Nominosuchus in the Ulan Malgait Formation and the Shishigou Formation allows us to assign an early Oxfordian age to Shartegosuchus. The independent evolution of a eusuchian-type secondary palate in an oreinorostral group suggests that the link between platyrostry and a closed secondary palate has been overstated. |
| WOS关键词 | PHYLOGENETIC POSITION ; CROCODYLIFORMES ; CROCODYLOMORPHA ; THALATTOSUCHIA ; MONGOLIA ; SKULL ; PATTERNS ; ANATOMY ; ORIGIN ; CHINA |
| 资助项目 | Palaeontological Scientific Trust (PAST), Johannesburg ; Scatterlings of Africa Programmes ; NRF African Origins Platform[98800] ; Competitive Programme for Rated Researchers[98906] ; NSF grant[EAR 1636753] ; National Natural Science Foundation of China[41688103] ; DST- NRF Centre of Excellence in Palaeosciences (CoE-Pal) |
| WOS研究方向 | Biodiversity & Conservation ; Zoology |
| 语种 | 英语 |
| WOS记录号 | WOS:000435476500001 |
| 出版者 | AMER MUSEUM NATURAL HISTORY |
| 资助机构 | Palaeontological Scientific Trust (PAST), Johannesburg ; Scatterlings of Africa Programmes ; NRF African Origins Platform ; Competitive Programme for Rated Researchers ; NSF grant ; National Natural Science Foundation of China ; DST- NRF Centre of Excellence in Palaeosciences (CoE-Pal) |
| 源URL | [http://119.78.100.205/handle/311034/8314]  |
| 专题 | 古脊椎动物与古人类研究所_图书馆1 |
| 通讯作者 | Dollman, Kathleen N. |
| 作者单位 | 1.Univ Witwatersrand, Evolutionary Studies Inst, Johannesburg, South Africa 2.Univ Witwatersrand, Sch Geosci, Johannesburg, South Africa 3.George Washington Univ, Washington, DC USA 4.Amer Museum Nat Hist, Div Paleontol, New York, NY 10024 USA 5.Inst Vertebrate Paleontol & Paleoanthropol, Beijing, Peoples R China |
| 推荐引用方式 GB/T 7714 | Dollman, Kathleen N.,Clark, James M.,Norell, Mark A.,et al. Convergent Evolution of a Eusuchian-Type Secondary Palate within Shartegosuchidae[J]. AMERICAN MUSEUM NOVITATES,2018(3901):1-23. |
| APA | Dollman, Kathleen N.,Clark, James M.,Norell, Mark A.,Xing, Xu,&Choiniere, Jonah N..(2018).Convergent Evolution of a Eusuchian-Type Secondary Palate within Shartegosuchidae.AMERICAN MUSEUM NOVITATES(3901),1-23. |
| MLA | Dollman, Kathleen N.,et al."Convergent Evolution of a Eusuchian-Type Secondary Palate within Shartegosuchidae".AMERICAN MUSEUM NOVITATES .3901(2018):1-23. |
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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