A New Ctenochasmatid Pterosaur from the Early Cretaceous of Liaoning Province

Based on a nearly complete lower jaw from the Early Cretaceous of Liaoning Province, a new ctenochasmatid pterosaur: Liaoxipterus brachyognathus gen. et sp. nov. is erected. Liaoxipterus brachyognathus is different from any known pterosaurs with skulls preserved from western Liaoning Province and its peripheral areas in that the anterior part of the mandibular symphysis is expanded, being widest between the fourth alveolus of each side. Liaoxipterus brachyognathus is assigned to Ctenochasmatidae based on the following characters: the rounded anterior end of the lower jaw is spatulated and dorsoventrally flattened and marked heterodonty in the dentition is absent. It difters from other ctenochasmatid pterosaurs in having relatively small number of teeth. Liaoxipterus is distinguished from some omithocheirids, which have expanded anterior parts of the mandibular symphyses, such as Anhanguera piscator,Coloborhynchus robustus in which the teeth of the new pterosaur are not as variable.

作 者： Dong Zhiming U Junchang   作者單位： Dong Zhiming(Research Center of Paleontology and Stratigraphy, Jilin University, Changchun 130026;Institute of Paleontology and Paleoanthropology, Chinese Academy Sciences, Beijing 100044)

U Junchang(Institute of Geology, Chinese Academy of Geological Sciences, Beijing 100037) 

刊 名： 地質(zhì)學(xué)報(bào)（英文版）  SCI 英文刊名： ACTA GEOLOGICA SINICA  年，卷(期)： 2005 79(2)  分類號：   關(guān)鍵詞： Liaoxipterus   Ctenochasmatidae   Jiufotang Formation   Early Cretaceous   Liaoning Province  

【A New Ctenochasmatid Pterosaur from 】相關(guān)文章：

New Sesquiterpenes from Cacalia ainsliaeflora04-27

Two New Eudesmanoildes from Sonchus transcaspicus04-28

Two New Saponins from Lysimachia davurica04-29

A New Diterpene Acid from the Flowers of Heteropappus altaicus04-26

A New Benzofuran Derivative from the Bark of Mulberry Tree04-29

Two New Glycosides from the Roots of Ranunculus ternatus04-26

A New Saponin Transformed from Ginsenoside Rhl by Bacillus subtilis04-28

Detection of a new mutation (1467-A) for the pedigree with mucopolysaccharidosis type Ⅱ from a Chinese family04-29

New fossil ommatid (Coleoptera: Archostemata: Ommatidae) from Jehol Biota of western Liaoning, China04-26

First isolation and characterization of a new species of Vibrio from diseased flounder (Paralichthys olivaceus Temminck04-29