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  1. By: Gervais, H. - Boulart, R. (Raoul), - Gervais, Paul,
    Publication info: Paris :J. Rothschild,1876-77.
    Holding Institution: Harvard University, Museum of Comparative Zoology, Ernst Mayr Library
  2. By: Gervais, H. - Ameghino, Florentino,
    Publication info: Paris :F. Savy,1880.
    Holding Institution: Smithsonian Libraries
    BHL Collections: Unearthed! Smithsonian Libraries' Paleo Collection