A New Genus of Paleonisciformes from the Early Cretaceous Longjiang Formation in Heilongjiang Province, China

作     者：WANG Xuri TAN Kai LU Liwu LI Tao CAI Qingqing 

作者机构：Key Laboratory of Paleontology and Stratigraphy Ministry of Natural Resources Beijing 100037 China Institute of Geology Chinese Academy of Geological Sciences Beijing 100037 China Hebei GEO University Shijiazhuang 050031 China The Geological Museum of China Beijing 100034 China Jilin University Museum Changehun 130026 China Liaoning Province Shiyan High Scholl Shenyang 110841 China 

出 版 物：《Acta Geologica Sinica(English Edition)》 (地质学报（英文版）)

年 卷 期：2018年第92卷第3期

页      面：889-896页

核心收录：

学科分类：070903[理学-古生物学与地层学(含：古人类学)] 0709[理学-地质学] 07[理学] 

基　　金：financially supported by the China Geological Survey (Grants No. DD20160207  DD20160126) 

主　　题：Paleonisciformes Early Cretaceous Longjiang Formation northeastern China 

摘      要：We report a new genus and species of Paleonisciformes-Cretolepis dongbeiensis gen. et sp. nov.,from the Early Cretaceous Longjiang Formation in Qiqihar City, Heilongjiang Province. The new materials can be distinguished from other Paleonisciformes genera by possessing the following characteristics: a sclerotic ring composed of more than five small bones; three pieces of suborbitals; one dermohyomandibular;a jaw hanging apparently inclined anteriorly; long and tall horizontal branch of the preopercular, a short vertical branch, with the angle formed by the two branches slightly higher than 90°; a triangular dorsal fin in the middle point between the pelvic and anal fins. The discovery of Mesozoic Paleonisciformes in northeastern China adds to the biodiversity and geographic distribution of Paleonisciformes.