2018, 37(2) 327-333 DOI:   10.3969/j.issn.1004-5589.2018.02.001  ISSN: 1004-5589 CN: 22-1111/P

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western Liaoning
Jehol Biota
Early Cretaceous
Yixian Formation
ZHOU Chang-fu
WU Wen-hao
DONG Zhi-ming
Article by Zhou C
Article by Wu W
Article by Sekiya T
Article by Dong Z

A new titanosauriformes dinosaur from Jehol Biota of western Liaoning, China

ZHOU Chang-fu1,2,3, WU Wen-hao4, SEKIYA Toru5, DONG Zhi-ming6

1. Paleontological Institute, Shenyang Normal University, Shenyang 110034, China;
2. Paleontological Museum of Liaoning, Shenyang 110034, China;
3. College of Earth Science and Engineering, Shandong University of Science & Technology, Qingdao 266590, Shandong, China;
4. Research Center of Paleontology & Stratigraphy, Jilin University, Changchun 130026, China;
5. Fukui Prefectural Dinosaur Museum, Fukui 911-8601, Katsuyama, Japan;
6. Institute of Vertebrate Paleontology and Paleoanthropology, CAS, Beijing 100044, China


A nearly complete sauropod skeleton, collected from the Jehol Biota of western Liaoning, is described briefly as a new titanosauriformes, Liaoningotitan sinesis gen. et sp. nov. Its diagnostic characters include:ventral margin of maxilla is convex, upper tooth row is short and anteriorly positioned; anterior extension of jugal nearly reaches the level of the anterior margin of the antorbital fenestra; quadrate wing of the pterygoid constricted basally; upper teeth are imbricated, narrow spatulate crown is D-shaped in cross section, with labial grooves and denticles absent; well reduced and un-imbricated nine lower teeth; lower tooth crown is asymmetric, elliptical-like in cross section, lingual grooves and ridge present, basal crown bulbous lingually; proximal expansion of the humerus is about 54.9% the length of the humerus, ilium with a pointed preacetabular process. Preliminary result of the phylogenetic analysis shows that Liaoningotitan falls into the clade of titanosauriformes, and is more derived than Euhelopus and Brachiosaurus.

Keywords western Liaoning   Jehol Biota   Early Cretaceous   Yixian Formation   titanosauriformes  
Received 2017-02-02 Revised 2017-03-29 Online:  
DOI: 10.3969/j.issn.1004-5589.2018.02.001
Corresponding Authors:
Email: paleovert@jlu.edu.cn
About author:

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