The Echinoid Directory

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Megalocidaris mariana Kier, 1977; Late Triassic, Carnian, of St Cassian, Italy. From Kier, P.M. 1977. Triassic echinoids. Smithsonian Contributions to Paleobiology 30, 1-88 (pl. 16, fig. 7). Lateral view.

Diameter of test approximately 9 mm.