Echinoidea distribution details

USA  (Nation)  
Smith, A. B. & Savill, J. J. 2001. Bromidechinus, a new Ordovician echinozoan (Echinodermata), and its bearing on the early history of echinoids. Transactions of the Royal Society of Edinburgh: Earth Sciences 92, 137-147.  [details]
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2017-09-11 08:37:40Z
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