【作者】 刘俊；

【Author】 LIU Jun;Institute of Vertebrate Paleontology and Paleoanthropology,Chinese Academy of Sciences;

【机构】 中国科学院古脊椎动物与古人类研究所；

【摘要】 详细记述了产于贵州关岭新铺的一个海龙新材料。此标本可定为孙氏新铺龙相似种(Xinpusaurus cf.suni)。其头后骨骼有以下特征:颈部短,颈椎数量少于7节;肩胛骨窄高;肱骨近端比远端宽;桡骨肾形;股骨比肱骨长;桡骨与腓骨基本等长。讨论了新铺龙四肢比例,并推测其在水中主要靠尾部侧向摆动前进,四肢起舵的作用。更多还原

【Abstract】 A new specimen is described and referred to Xinpusaurus cf.suni.The postcranial skeleton is characterized by the number of cervical vertebrae that is less than 7,i.e.,having a short neck;by high and narrow Thalattosaurus-type scapula,the proximal end of the humerus being wider than the distal end,the kidney-shaped radius,the femur being longer than the humerus,the length of the radius being equal to that of the fibula.Based on the analysis of the limb proportions and the tail,it is inferred that the lateral undulation of the tail of Xinpusaurus would have provided the necessary force to propel the body through the water,and the limbs are reduced to a steering function.更多还原