Gabb, W. M. (1861). Synopsis of the Mollusca of the Cretaceous Formation, including the geographical and stratigraphical range and synonymy. Proceedings of the American Philosophical Society. 8: 57-257 [offprint pp. 1-201].
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Gabb, W. M.
1861
Synopsis of the Mollusca of the Cretaceous Formation, including the geographical and stratigraphical range and synonymy