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  1. By: Carvalho, Maria da Gloria Pires de - Edgecombe, Gregory D. - Lieberman, Bruce S
    Publication info: New York, N.Y, American Museum of Natural History, c1997
    Holding Institution: American Museum of Natural History Library
    Subjects: Brazil  Devonian  Paleontology  Parnaíba River Valley  Piauí  Trilobites