A new species of chaoyangopterid pterosaur from the Early Cretaceous in western Liaoning, China

被引：0
|
作者：
Ji S. [1 ]
Zhang L. [2 ]
Lu F. [3 ]
机构：
[1] Key Laboratory of Stratigraphy and Palaeontology, Ministry of Natural Resources, Institute of Geology, Chinese Academy of Geological Sciences, Beijing
[2] South China Sea Culture Museum, Hainan Tropical Ocean University, Hainan, Sanya
[3] Sanya Dinosaur Fossil Museum, Hainan, Sanya
来源：
Dizhi Xuebao/Acta Geologica Sinica | 2023年 / 97卷 / 06期
关键词：
Chaoyangopteridae; Early Cretaceous; Jiufotang Formation; Ptcrodactyloidea; Shenzhoupterus sanyainus sp. nov; western Liaoning;
D O I：
10.19762/j.cnki.dizhixuebao.2023322
中图分类号：
学科分类号：
摘要：
The Early Cretaceous pterosaurs arc abundant in the western Liaoning Province, China with two pterosaur assemblages. The upper one, pterosaur assemblage of the Jiufotang Formation is featured by some advanced pterodactyloid clades including toothless Tapcjaridac and Chaoyangopteridae, which show differences from the lower one, pterosaur assemblage of the Yixian Formation. A new large-sized pterosaur skeleton is described here, which was found in the Jiufotang Formation of the Jianchang basin, western Liaoning. This specimen can be assigned to the genus Shenzhoupterus within the family Chaoyangopteridae as it possesses the following features: toothless jaws, rostral index being 3. 7, long and slender premaxillary bar dorsally bounding the nasoantorbital fenestra, caudal extremity of the very large nasoantorbital fenestra posterior to the jaw joint, and broader base of premaxillary process of jugal. It is also distinguished from Shenzhoupterus chaoyangensis in having the characters such as: large size with the wing-span about 2.05 meters, straight occlusal margin of upper and lower jaws, longer postorbital process with slightly wider base than lacrimal process of jugal, and sequentially decreased fourth to seventh cervical vertebrae. Thus a new species, Shenzhoupterus sanyainus sp. nov., is established. This new taxon possesses the largest wing-span among the Early Cretaceous toothless pterosaurs from western Liaoning Province. The finding also enriches the elements of pterosaur assemblage of the Jiufotang Formation, and is of significance for understanding the anatomy and ecological habits of chaoyangopterids. © 2023 Geological Society of China. All rights reserved.
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页码：1723 / 1740
页数：17
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共 29 条
  • [1] Andres B., Phylogenetic systematica of Quetzalcoatlus Lawson 1975 (Pterodactyloidea: Azhdarchoidea), Journal of Vertebrate Paleontology, 41, 1, pp. 203-217, (2021)
  • [2] Dong Zhiming, Sun Yuewu, Wu Shaoyuan, On a new pterosaur from the Lower Cretaceous of Chaoyang basin, western Liaoning, China, Global Geology, 22, pp. 1-7, (2003)
  • [3] Diansong Gao, Shunxing Jiang, Li Xu, Xin Cheng, Lili Yang, Songhai Jia, Xiaolin Wang, Reappraisal of the largest ctenochasmatid Moganopterus zhuiana Lii et al., 2012, Vertehrata PalAsiatica, 60, 3, pp. 197-211, (2022)
  • [4] Hu Dongyu, Li Li, Hou Lianhai, Xu Xing, A new enantiornithine bird from the Lower Cretaceous of western Liaoning, China, Journal of Vertebrate Paleontology, 31, 1, pp. 154-161, (2011)
  • [5] Junchang Lu, Qiang Ji, New azhdarchid pterosaur from the Early Cretaceous of western Liaoning, Acta Geologica Sinica (English Edition), 79, 3, pp. 301-307, (2005)
  • [6] Junchang Lii, Zhang Baokun, New pterodactyloid pterosaur from the Yixian Formation of western Liaoning, Geological Review, 51, 4, pp. 458-462, (2005)
  • [7] Junchang Lu, Jinyuan Liu, Xuri Wang, Chunling Gao, Qingjin Meng, Qiang Ji, New material of pterosaur Sinopterus (Reptilia: Pterosauria) from the Early Cretaceous Jiufotang Formation, western Liaoning, China, Acta Geologica Sinica (English Edition), 80, 6, pp. 783-789, (2006)
  • [8] Junchang Lii, Unwin D M, Li Xu, Xingliao Zhang, A new azhdarchoid pterosaur from the Lower Cretaceous of China and its implications for pterosaur phylogeny and evolution, Naturwissenschaften, 95, 9, pp. 891-897, (2008)
  • [9] Junchang Lij, Hanyong Pu, Li Xu, Yanhua Wu, Xuefang Wei, Largest toothed pterosaur skull from the Early Cretaceous Yixian Formation of western Liaoning, China, with comments on the family Boreopteridae, Acta Geologica Sinica (English Edition), 86, 2, pp. 287-293, (2012)
  • [10] Junchang Lii, Fangfang Teng, Deyu Sun, Caizhi Shen, Guoqing Li, Xia Gao, Hanfeng Liu, The toothless pterosaurs from China, Acta Geologica Sinica, 90, 9, pp. 2513-2525, (2016)
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