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Pleurodiadema nudum Cotteau, 1875, p. 424

Distribution	Upper Jurassic (Kimmeridgian), France
Type	Holotype: University of Lyon, Palaeontological Collections unregistered.
Classification and/or Status	A species of Pleurodiadema
Remarks	Specimen has perforate, non-crenulate tuberculation and diadematid-style plate compounding below the ambitus. Cotteau, G. 1875. Echinides nouveaux ou peu connus. Revue et Magazin de Zoologie 26, 417-428.