Category:Fossil illustrations (20th century)
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This category has only the following subcategory.
Media in category "Fossil illustrations (20th century)"
The following 2 files are in this category, out of 2 total.
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Moropus 1918.jpg 915 × 499; 349 KB
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North American index fossils, invertebrates (IA northamericanind01grab).pdf 958 × 1,385, 872 pages; 78.74 MB