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Volume 23 Issue 1
Feb 2012
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Journal of Earth Science  > 2012  >  23(1): 33-40.
Long Cheng, Xiaohong Chen, Xiongwei Zeng, Yongjian Cai. A New Eosauropterygian (Diapsida: Sauropterygia) from the Middle Triassic of Luoping, Yunnan Province. Journal of Earth Science, 2012, 23(1): 33-40. doi: 10.1007/s12583-012-0231-z
Citation: Long Cheng, Xiaohong Chen, Xiongwei Zeng, Yongjian Cai. A New Eosauropterygian (Diapsida: Sauropterygia) from the Middle Triassic of Luoping, Yunnan Province. Journal of Earth Science, 2012, 23(1): 33-40. doi: 10.1007/s12583-012-0231-z
shu

A New Eosauropterygian (Diapsida: Sauropterygia) from the Middle Triassic of Luoping, Yunnan Province

doi: 10.1007/s12583-012-0231-z
  • 1.

    Key Laboratory of Biogeology and Environmental Geology of Ministry of Education, China University of Geosciences, Wuhan 430074, China

  • 2.

    Wuhan Institute of Geology and Mineral Resources, Wuhan 430223, China

  • 3.

    Wuhan Institute of Earthquake Engineering, Wuhan 430071, China

Funds:

China Geological Survey 1212010611603

China Geological Survey 1212011120148

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  • Corresponding author: Xiaohong Chen clong@cgs.cn
  • Received Date: 05 Dec 2010
  • Accepted Date: 10 Mar 2011
  • Publish Date: 01 Feb 2012
    Abstract
  • A new eosauropterygian, Largocephalosaurus polycarpon gen. et sp. nov., was described based on a skeleton from the Middle Triassic of Luoping(罗平), Yunnan(云南) Province, southwestern China. The new taxon is characterized by a big skull, paired frontal, laterally expanded upper temporal fossa, anterior process of squamosal entering orbit, robust teeth with basally expanded crown and blunt tip, short cervical region, distinctly elongated transverse process of the dorsal vertebrae, short and broad dorsal ribs, stout gastralia, scapula with distinctly posterodorsally extending blade, distinctly robust humerus, eleven carpal ossifications, and a manual fomula of 2-3-4-5-5. A phylogenetic analysis suggests that Largocephalosaurus is the basal-most member of a clade including Wumengosaurus European pachypleurosaurs, and Nothosauroidea.

     

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