THE DINOSAURS OF THE NIOBRARA CHALK FORMATION (UPPER CRETACEOUS, KANSAS)

被引:58
作者
CARPENTER, K
DILKES, D
WEISHAMPEL, DB
机构
[1] UNIV TORONTO,ERINDALE COLL,DEPT BIOL,MISSISSAUGA,ON L5L 1C6,CANADA
[2] JOHNS HOPKINS UNIV,SCH MED,DEPT CELL BIOL & ANAT,BALTIMORE,MD 21205
关键词
D O I
10.1080/02724634.1995.10011230
中图分类号
Q91 [古生物学];
学科分类号
0709 ; 070903 ;
摘要
The dinosaurian fauna of the Niobrara Chalk Formation constitutes the best known assemblage from the middle Santonian-early Campanian interval of the Late Cretaceous of North America. The fauna consists of both hadrosaurid ornithopods and nodosaurid ankylosaurs. The nodosaurid specimens from the Smoky Hill Chalk Member of the Niobrara Chalk Formation include the holotype of Hierosaurus sternbergii (here regarded as nomen dubium), material of ''Hierosaurus'' coleii (herein designated the type species of the new genus Niobrarasaurus) and two specimens that may belong to N. coleii, but are better interpreted as Nodosauridae incertae sedis. Claosaurus agilis, the sole hadrosaurid from the Niobrara Chalk Formation, constitutes a poorly known, but distinct species having a basal relationship among remaining hadrosaurids.
引用
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页码:275 / 297
页数:23
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