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A new transitional therizinosaurian theropod from the Early Cretaceous Jehol Biota of China

文献类型：期刊论文

作者Yao, Xi1,3; Liao, Chun-Chi1,3; Sullivan, Corwin4,5; Xu, Xing1,2
刊名SCIENTIFIC REPORTS
出版日期2019-03-22
卷号9页码:12
ISSN号2045-2322
DOI10.1038/s41598-019-41560-z
通讯作者Xu, Xing(xingxu@vip.sina.com)
英文摘要Therizinosaurian theropods evolved many highly specialized osteological features in association with their bulky proportions, which were unusual in the context of the generally gracile Theropoda. Here we report a new therizinosaur, Lingyuanosaurus sihedangensis gen. et sp. nov., based on a specimen recovered from the Lower Cretaceous Jehol Group of Lingyuan, Liaoning Province, China, which displays a combination of plesiomorphic and derived features. Most notably, the specimen is characterized by posterior dorsal vertebrae with a complex and unusual laminar structure; an ilium with a highly dorsoventrally expanded preacetabular process showing only slight lateral flaring of the ventral margin, a strongly anterodorsally inclined iliac blade, a small postacetabular process with a strongly concave dorsal margin, and a relatively robust pubic peduncle with a posteroventrally facing distal articular surface; a straight and robust femur with a small lesser trochanter; and a tibia that is longer than the femur. Phylogenetic analysis places Lingyuanosaurus in an intermediate position within Therizinosauria, i.e., between the early-branching therizinosaurs such as Falcarius, Jianchangosaurus, and Beipiaosaurus and the late-branching ones such as Alxasaurus and Therizinosaurus. This new therizinosaur sheds additional light on the evolution of major therizinosaurian characteristics, including particularly the distinctive pelvic girdle and hindlimb morphology seen in this group.
WOS关键词DINOSAURIA THEROPODA ; YIXIAN ; AGE
资助项目National Natural Science Foundation of China[41688103] ; National Natural Science Foundation of China[91514302] ; National Natural Science Foundation of China[41120124002] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDB18030504] ; Natural Sciences and Engineering Research Council of Canada[RGPIN-2017-06246] ; University of Alberta start-up funds
WOS研究方向Science & Technology - Other Topics
语种英语
WOS记录号WOS:000461997600009
出版者NATURE PUBLISHING GROUP
资助机构National Natural Science Foundation of China ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Natural Sciences and Engineering Research Council of Canada ; University of Alberta start-up funds
源URL[http://119.78.100.205/handle/311034/9534]  
专题中国科学院古脊椎动物与古人类研究所
通讯作者Xu, Xing
作者单位1.Chinese Acad Sci, Inst Vertebrate Paleontol & Paleoanthropol, Key Lab Vertebrate Evolut & Human Origins, Beijing, Peoples R China
2.CAS Ctr Excellence Life & Paleoenvironm, Beijing, Peoples R China
3.Univ Chinese Acad Sci, Beijing, Peoples R China
4.Univ Alberta, Dept Biol Sci, Edmonton, AB, Canada
5.Philip J Currie Dinosaur Museum, Wembley, AB, Canada
推荐引用方式
GB/T 7714		 Yao, Xi,Liao, Chun-Chi,Sullivan, Corwin,et al. A new transitional therizinosaurian theropod from the Early Cretaceous Jehol Biota of China[J]. SCIENTIFIC REPORTS,2019,9:12.
APA Yao, Xi,Liao, Chun-Chi,Sullivan, Corwin,&Xu, Xing.(2019).A new transitional therizinosaurian theropod from the Early Cretaceous Jehol Biota of China.SCIENTIFIC REPORTS,9,12.
MLA Yao, Xi,et al."A new transitional therizinosaurian theropod from the Early Cretaceous Jehol Biota of China".SCIENTIFIC REPORTS 9(2019):12.

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来源：古脊椎动物与古人类研究所

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