A New Specimen of Liaoceratops yanzigouensis(Dinosauria:Neoceratopsia)from the Early Cretaceous of Liaoning Province,China  

作　　者：YOU Hailu Kyo TANOUE Peter DODSON 

机构地区：[1]Institute of Geology, Chinese Academy of Geological Sciences, 26 Baiwanzhuang Road, Beijing 100037, China [2]Department of Earth and Environmental Science, University of Pennsylvania, 240 S. 33rd Street, Philadelphia, PA 19104-6316, USA [3]School of Veterinary Medicine, University of Pennsylvania, 3800 Spruce Street, Philadelphia, PA 19104-6045, USA

出　　处：《Acta Geologica Sinica(English Edition)》2007年第6期898-904,共7页地质学报（英文版）

基　　金：the Ministry of Science and Technology of China(973 Project:2006CB701405);National Natural Science Foundation of China(40672007);the Hundred Talents Project of Ministry of Land and Resources of China to You Hai-Lu.Kyo Tanoue was funded by Summer Research Stipends in Paleontology(University of Pennsylvania);School of Arts and Sciences Dissertation Research Fellowship(University of Pennsylvania);Jurassic Foundation Research Grant.

摘　　要：A new specimen of basal neoceratopsian dinosaur Liaoceratops yanzigouensis is described. The specimen comes from the Lujiatun Bed of the Lower Cretaceous Yixian Formation in Beipiao City of western Liaoning Province, and is represented by a very well preserved three-dimensional partial skull and mandible. It is also the smallest among the three specimens of L. yanzigouensis, and several features in the new specimen, such as the short preorbital length and the round rostroventral orbital rim, can be ontogenetically-related. The superb exposure of the palatal complex may be caused by the removing of its brain by a small predator in the contemporary Jehol Biota.A new specimen of basal neoceratopsian dinosaur Liaoceratops yanzigouensis is described. The specimen comes from the Lujiatun Bed of the Lower Cretaceous Yixian Formation in Beipiao City of western Liaoning Province, and is represented by a very well preserved three-dimensional partial skull and mandible. It is also the smallest among the three specimens of L. yanzigouensis, and several features in the new specimen, such as the short preorbital length and the round rostroventral orbital rim, can be ontogenetically-related. The superb exposure of the palatal complex may be caused by the removing of its brain by a small predator in the contemporary Jehol Biota.

关 键 词：DINOSAURIA Neoceratopsia Early Cretaceous Yixian Formation Liaoning Province China 

分 类 号：Q915[天文地球—古生物学与地层学]