栉水母动物门：原始棘皮动物的新类群。
Ctenocystoidea: new class of primitive echinoderms.
出版信息
Science. 1969 Dec 19;166(3912):1512-4. doi: 10.1126/science.166.3912.1512.
Abstract
The oldest known "carpoids" of the echinoderm subphylum Homalozoa have been discovered in lower Middle Cambrian rocks of northern Utah. They were free-living benthonic animals characterized by a unique ctenoid feeding apparatus and flattened flexible theca with near bilateral symmetry. A new class, Ctenocystoidea, is proposed to include the new genus and new species, Ctenocystis utahensis.
摘要
在犹他州北部的下中寒武纪岩石中发现了最古老的已知同源动物亚门海星体的“栉水母类”。它们是自由生活的底栖动物，具有独特的栉齿状摄食器官和扁平柔韧的壳，具有近乎双侧对称的特点。提出了一个新的分类单元，栉水母类，包括新属和新种，犹他栉水母。
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