The Echinoid Directory

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Acrosalenia marratensis Kier, 1972; holotype. Marrat Formation, Toarcian, Lower Jurassic, near Riyahd, Saudi Arabia. Oral view, from Kier, P. M.  1972. Tertiary and Mesozoic echinoids of Saudi Arabia. Smithsonian Contributions to Paleobiology 10, 1-242 (pl. 27, fig. 4).

Diameter of test 19 mm.