湖南株洲晚白垩世恐龙化石的初步研究  

PRELIMINARY STUDY OF A DIVERSE DINOSAUR ASSEMBLAGE FROM THE UPPER CRETACEOUS OF ZHUZHOU,HUNAN PROVINCE

作　　者：韩凤禄[1] 邢海 童潜明[3] Corwin Sullivan 徐星[4] 武瑞[1] 胡能勇 童光辉 HAN Feng-lu XING Hai TONG Qian-ming Corwin SULLIVAN XU Xing WU Rui HU Neng-yong TONG Guang-hui(）School of Earth Sciences, China University of Geosciences , Wuhan 430074,China ）Beijing Museum of Natural History ,Beijing 100500,China ） Hunan Academy of Geological Sciences, Changsha 410007, China ） Institute of Vertebrate Paleontology and Paleoanthropology, Chinese Academy of Sciences, Beijing 100044, China ） Hunan Geological Museum, Changsha 410004, China)

机构地区：[1]中国地质大学(武汉)地球科学学院,武汉430074 [2]北京自然博物馆,北京100050 [3]湖南省地质科学研究院,长沙410007 [4]中国科学院古脊椎动物与古人类研究所,北京100044 [5]湖南省地质博物馆,长沙410004

出　　处：《古生物学报》2017年第2期225-237,共13页Acta Palaeontologica Sinica

基　　金：国家自然科学基金(41120124002;41502011;41602006);北京市自然科学基金(5174032);北京市科学技术研究院青年骨干计划(201601);北京市新世纪百千万人才工程项目资助

摘　　要：我国南方上白垩统产丰富的恐龙蛋化石,但发现的恐龙骨骼化石的种类和数量相对较少。本文对湖南株洲天元区新发现的恐龙化石进行详细研究。初步分析结果表明该化石点恐龙种类丰富,可能包括至少两种蜥脚类、三种兽脚类和一种鸭嘴龙类。其中部分蜥脚类材料可能归属于梁龙超科,填补了该类群在东亚上白垩统的空白记录;一个蜥脚类坐骨则显示泰坦巨龙类的典型特征。兽脚类材料可能来自于小型的虚骨龙类、暴龙科和鲨齿龙科。前两者为晚白垩世的常见类群,而鲨齿龙科的化石记录在上白垩统非常少见。本文为鲨齿龙科可能在东亚一直延伸至晚白垩世提供了新的证据。该地区多门类恐龙化石的发现表明我国南方恐龙的种类可能比我们想象的要丰富得多,而且可能是梁龙类和鲨齿龙类的最后栖息地。株洲恐龙动物群的发现对于了解亚洲特别是中国恐龙的生物地理区系的分布具有重要意义。Numerous dinosaur eggs have been discovered in the Upper Cretaceous of South China, but previously documented dinosaur bones are relati- vely rare in these strata and represent a small number of taxa. Here we present the first detailed study of dinosaur body fossils from the Upper Cretaceous Daijiaping Formation of the Tianyuan district, Zhuzhou, Hunan Province, China. This dinosaur assemblage contains diverse taxa, possibly including at least two sauropods, three theropods and one hadrosaurid. Some sauropod material can be tentatively assigned to Diplodocoidea, which represents limited but suggestive evidence that diplodocoids occur in Asia. One sauropod ischium appears to show derived features of Titanosauria, although more evidence is needed to support referral to this clade. The theropod sample consists entirely of teeth, but may include a small coelurosaur （e. g. a dromaeosaurid）, a tyranno- sauroid and a carcharodontosaurid. Small coelurosaurs and tyrannosauroids are fairly common in the Upper Cretaceous of northern continents, whereas carcharodontosaurids have a comparatively poor record. The multitaxic dinosaur assemblage from Zhuzhou suggests this part of China was home to a richer Cretaceous fauna than previously believed, and may have been one of the last places where diplodocoids and carcharodontosaurids persisted. The Zhuzhou dinosaurs thus have important implications for the study of Asian, and particularly Chinese, dinosaur biogeographic investigation.

关 键 词：恐龙 戴家坪组 晚白垩世 湖南 

分 类 号：Q915.2[天文地球—古生物学与地层学]