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Notes on Didelphidae (Mammalia, Marsupialia) from the Huayquerian (Pliocene) of Argentina. American Museum novitates ; no. 2559

Simpson, George Gaylord, 1902- (New York, N.Y. : American Museum of Natural History, 1974)
A review of the pre-Pliocene penguins of New Zealand. Bulletin of the AMNH ; v. 144, article 5

Simpson, George Gaylord, 1902- (New York : [American Museum of Natural History], 1971)
Conspectus of Patagonian fossil penguins. American Museum novitates ; no. 2488

Simpson, George Gaylord, 1902-; Ameghino, Florentino, 1853-1911. (New York, N.Y. : American Museum of Natural History, 1972)

Now showing items 1-3 of 3