Echinoidea distribution details

USA  (Nation)  
Frest, T. J. & Strimple, H. L. 1977. Praepholidocidaris, a new echinoid from the Pella Formation (Mississippian) of Iowa. Proceedings of the Iowa Academy of Sciences 84, 98-105.  [details]
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2017-09-11 08:37:40Z
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