Emerson, W. K. & Hertlein, L. G. (1964). Invertebrate megafossils of the Belvedere Expedition to the Gulf of California. Transactions of the San Diego Society of Natural History. 13(17): 333-368.
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Emerson, W. K. & Hertlein, L. G.
1964
Invertebrate megafossils of the Belvedere Expedition to the Gulf of California
Transactions of the San Diego Society of Natural History