The Echinoid Directory

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Phyllobrissus gresslyi (L. Agassiz, 1839). Valanginian, Early Cretaceous, Yonne, France. From P. M. Kier. 1962. Revision of the cassiduloid echinoids. Smithsonian Miscellaneous Collections, 144 (3) 262 pp. (plate 11, fig. 5). Oral view.

Length of test 51 mm.