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By: Carvalho, Maria da Gloria Pires de - Edgecombe, Gregory D. - Lieberman, Bruce SEdition:Publication info: New York, N.Y, American Museum of Natural History, c1997Volume: no. 3192Series:Holding Institution: American Museum of Natural History LibrarySubjects: Brazil Devonian Paleontology Parnaíba River Valley Piauí TrilobitesBHL Collections: