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A Jason mollusk from the Reptilian age of the Mesozoic time.

Jason Mollusk

A Jason mollusk from the Reptilian age of the Mesozoic time.

Four varieties of mollusks from the Mesozoic time: "391, Exogyra costata; 392, Inoceramus problematicus; 393, Gryphaea vesicularis; 394, G. Pitcheri." -Dana, 1883

Mesozoic Mollusks

Four varieties of mollusks from the Mesozoic time: "391, Exogyra costata; 392, Inoceramus problematicus;…