Category:Fossils from the Keokuk Formation

Media in category "Fossils from the Keokuk Formation"

The following 2 files are in this category, out of 2 total.

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  A dictionary of the fossils of Pennsylvania and neighboring states named in the reports and catalogues of the survey (1889) (20618671268).jpg 1,810 × 3,736; 2.88 MB
  
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  The American journal of science (1897) (17966080370).jpg 812 × 2,784; 539 KB