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By: Cooke, C. Wythe (Charles Wythe) ,Edition:Publication info: New York, American Museum of Natural History, [1949]Volume: no.1422 (1949)Series:Holding Institution: American Museum of Natural History LibrarySubjects: 56.39.5P(117) Cretaceous Echinodermata, Fossil Guatemala Paleontology Pygurostoma pasionensis Sea urchins, FossilBHL Collections: