Echinoids of the genus Washitaster (Spatangoida):: Morphology and taxonomic position

被引：0
|
作者：
Markov, AV [1 ]
Solovjev, AN [1 ]
机构：
[1] Russian Acad Sci, Inst Paleontol, Moscow, Russia
来源：
PALEONTOLOGICHESKII ZHURNAL | 2002年 / 04期
关键词：
D O I：
暂无
中图分类号：
Q91 [古生物学];
学科分类号：
0709 ; 070903 ;
摘要：
The type material on the genus Washitaster Lambert from the Upper Albian of Texas is reexamined, and the genus is assigned to the Toxasteridae. The most important character of this genus is the presence of multiple fasciole of unique structure not found in other spatangoids. In some species of Washita-ster, there is an alternation of arched and slitlike pores in ambulacrum III, the feature relating this genus to Heteraster (Toxasteridae).
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页码：45 / 56
页数：16
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