Convergent Evolution of a Eusuchian-Type Secondary Palate within Shartegosuchidae

IVPP-IR > 中科院古脊椎所（2000年以后）

	Convergent Evolution of a Eusuchian-Type Secondary Palate within Shartegosuchidae
	Dollman, Kathleen N.1,2; Clark, James M.3; Norell, Mark A.4; Xing, Xu 5; Choiniere, Jonah N.1,2
	2018-06-18
发表期刊	AMERICAN MUSEUM NOVITATES
ISSN	0003-0082
期号	3901 页码:1-23
通讯作者	Dollman, Kathleen N.()
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.
关键词	Crocodylomorpha palatal fenestra pterygoid Ulan Malgait Formation Mongolia
关键词[WOS]	PHYLOGENETIC POSITION ; CROCODYLIFORMES ; CROCODYLOMORPHA ; THALATTOSUCHIA ; MONGOLIA ; SKULL ; PATTERNS ; ANATOMY ; ORIGIN ; CHINA
收录类别	SCI
语种	英语
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)
项目资助者	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)
WOS研究方向	Biodiversity & Conservation ; Zoology
WOS类目	Biodiversity Conservation ; Zoology
WOS记录号	WOS:000435476500001
出版者	AMER MUSEUM NATURAL HISTORY
引用统计	被引频次：17[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://119.78.100.205/handle/311034/8314
专题	中科院古脊椎所（2000年以后）
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.

条目包含的文件		下载所有文件
文件名称/大小	文献类型	版本类型	开放类型	使用许可
Convergent Evolution（7125KB）	期刊论文	作者接受稿	开放获取	CC BY-NC-SA	浏览下载