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A New Specimen of Shansisuchus shansisuchus Young, 1964 (Diapsida: Archosauriformes) from the Triassic of Shanxi, China
投稿时间:2013-01-31  修订日期:2013-06-07  点此下载全文
引用本文:WANG Runfu, XU Shichao, WU Xiaochun, LI Chun and WANG Suozhu.2013.A New Specimen of Shansisuchus shansisuchus Young, 1964 (Diapsida: Archosauriformes) from the Triassic of Shanxi, China[J].ACTA GEOLOGICA SINICA(English edition),87(5):1185~1197
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作者单位E-mail
WANG Runfu, XU Shichao, WU Xiaochun, LI Chun and WANG Suozhu 1 Shanxi Museum of Geology, Binhexilu Zhongduan, Taiyuan 030024, Shanxi, China 2 Canadian Museum of Nature, P.O Box 3443 STN ‘D’, Ottawa, Ontario K1P 6P4, Canada 3 Laboratory of Evolutionary Systematics of Vertebrates, Institute of Vertebrate Paleontology and Paleoanthropology, Chinese Academy of Sciences, P. O. Box 643, Beijing 100044, China xcwu@mus-nature.ca 
基金项目:This work was financially supported by Shanxi Department of Land and Resources and by Research grants from the National Natural Science Foundation of China (NNSFC-41072014, 40772015), the CAS/SAFEA International Partnership Program for Creative Research Teams of China and from the Canadian Museum of Nature (RS34).
中文摘要:Shansisuchus shansisuchus Young, 1964 was restudied on the basis of a new specimen. Some anatomical features that were either briefly or not described at all in the original study were detailed. The new specimen not only provides further information on the skull anatomy and the vertebral column but also expands the range of the geographical distribution of the taxon. With new information, the diagnosis of S. shansisuchus was emended and its phylogenetic relationships were further analyzed. S. shansisuchus differs from other archosauriforms primarily in the presence of a large subnarial fenestra anterior to the antorbital fenestra, tongue-in-groove articulations between the ascending process of the premaxilla and nasal and between the premaxilla and maxilla, a tall and posterodorsally directed ascending process of the maxilla, a knee-shaped process of the postorbital projecting into the orbit, a broad descending process of squamosal distally well forked and a large, deeply bow-shaped intercentrum tightly anchoring/capping the sharp ventral edges of two neighboring centra together in cervical and at least first eight dorsal vertebrae. With additional information derived from the new specimen, the phylogenetic relationships of S. shansisuchus were reanalyzed; it is closely related to Erythrosuchus-Vjushkovia clade.
中文关键词:Archosauriformes, Shansisuchus, Ermaying Formation, Triassic, Shanxi
 
Author NameAffiliationE-mail
  xcwu@mus-nature.ca 
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