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  1. Early Miocene salamander and lizards from Florida
    By: Estes, Richard
    Type: Article
    In: Quart J Florida Acad Sci
    Volume: 26
    Date: 1963
    Page Range: 234--256
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  2. Fossil amphibians from quarry nine
    By: Hecht, Max K - Estes, Richard
    Type: Article
    In: Postilla
    Volume: 46
    Date: 1960-05-30
    Page Range: 1--19
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  3. A new fossil discoglossid frog from Montana and Wyoming
    By: Estes, Richard
    Type: Article
    In: Breviora
    Volume: 328
    Date: 1969-11-15
    Page Range: 1--7
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