宾夕法尼亚语
过卡里达
古生物学
等足类
地质学
生物
甲壳动物
生态学
构造盆地
出处
期刊:Science
[American Association for the Advancement of Science (AAAS)]
日期:1970-08-28
卷期号:169 (3948): 854-855
被引量:54
标识
DOI:10.1126/science.169.3948.854
摘要
Hesslerella shermani is described as the oldest representative of the crustacean superorder Peracarida, order Isopoda, suborder Phreatoicidea. This description is based on a single specimen of exceptional preservation from the Middle Pennsylvanian of Illinois. The existence of isopods in the Pennsylvanian raises some questions concerning peracarid and eumalocostracan evolution.
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