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  1. By: Case, E. C. (Ermine Cowles), - Sellards, Elias Howard, - Hussakof, L. (Louis),
    Publication info: Washington, D.C, Carnegie Institution of Washington, 1911
    Holding Institution: Cornell University Library
    BHL Collections: Unearthed! Smithsonian Libraries' Paleo Collection
  2. By: Mook, Charles Craig, - Sellards, Elias Howard,
    Publication info: 1921
    Holding Institution: American Museum of Natural History Library