[?=Cidaris keyserlingi Geinitz, 1843 ]
Distribution | Lower Permian, western Europe. |
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Remarks | See Smith & Hollingworth (1990) for a description. Smith, A. B. & Hollingworth, N. T. J. 1900. Tooth structure and phylogeny of the Upper Permian echinoid Miocidaris keyserlingi. Proceedings of the Yorkshire Geological Society 48, 47-60. |