摘要
记述了蜥脚类恐龙(Sauropoda)中一新的属种—西地九台龙(Jiutaisaurusxidiensisgen.etsp.nov.),包括18个相关节的尾椎及13个脉弧。化石产于吉林九台白垩纪泉头组的紫色-杂色砂岩中。其主要特征为:中部尾椎椎体两侧出现前后延长的棱脊,前-中部尾椎双凹型,神经弓位于椎体前半部,脉弧不分叉,血管孔长度约占脉弧长度的1/2以上。新属种的发现对进一步研究白垩纪蜥脚类恐龙的系统演化、古地理分布等提供了新的材料。
A new sauropod dinosaur, Jiutaisaurus xidiensis gen. et sp. nov. from the Cretaceous Quantou Formation exposed in Xidi village of Jiutai in Jilin, Northeast China, is described in this paper. The remains consist of a series of 18 articulated anterior and middle caudual vertebrae. It is distinguished from other sauropods in its possession of a longitudinal ridge on both sides of the middle caudal centra, amphicoelous anterior and middle caudals, chevrons unforked at their distal ends, and deep chevron haemal canal. The new material from Quantou Formation is significant for better understanding the evolution and distributions of Sauropoda in the Cretaceous.
出处
《世界地质》
CAS
CSCD
2006年第1期6-9,共4页
World Geology
关键词
恐龙
蜥脚类
九台龙
白垩纪
吉林九台
dinosaur
sauropod
Jiutaisaurus
Cretaceous
Jiutai of Jilin
