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  1. By: Andrews, Henry N - Gensel, Patricia G - Forbes, William H
    Type: Article
    In: Palaeontology
    Volume: 17
    Date: 1974
    Page Range: 387--408
    Publication Info: London, Palaeontological Association, 1957-
  2. By: Gensel, Patricia G - Berry, Christopher M
    Type: Article
    In: American fern journal
    Volume: 91
    Date: 2001
    Page Range: 74--98
    Publication Info: [Washington, etc.] American Fern Society
  3. By: Gensel, Patricia G
    Type: Article
    In: Annals of the Missouri Botanical Garden
    Volume: 79
    Date: 1992
    Page Range: 450--473
    Publication Info: St. Louis, Missouri Botanical Garden Press, 1914-
  4. By: Gensel, Patricia G - Chaloner, W. G. (William Gilbert) - Forbes, William H
    Type: Article
    In: Palaeontology
    Volume: 34
    Date: 1991
    Page Range: 149--168
    Publication Info: London, Palaeontological Association, 1957-