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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