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A new fossil perissodactyl from Peru. American Museum novitates ; no. 111

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By: Anthony, H. E. (Harold Elmer), - Richards, J. G., geologist.

Publication info: 1924

Holding Institution: American Museum of Natural History Library
Two Tertiary mammals from northern South America. American Museum novitates ; no. 1173

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By: Patterson, Bryan, - Richards, J. G., geologist. - Roper, S. H.

Publication info: 1942

Holding Institution: American Museum of Natural History Library