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  1. By: Ferbert, Mary Lou - Peterson, Roger Tory
    Type: Article
    In: Kirtlandia
    Volume: 49
    Date: 1996
    Page Range: 45--47
    Publication Info: Cleveland, Ohio, Cleveland Museum of Natural History,
  2. By: Ferbert, Mary Lou - Newell, Norman D., - Gould, Stephen Jay.
    Type: Article
    In: Kirtlandia
    Volume: 48
    Date: 1994-02
    Page Range: 23--30
    Publication Info: Cleveland, Ohio, Cleveland Museum of Natural History,