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Fieldiana v.12:no.6 (1963)
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Pennsylvanian invertebrates of the Mazon Creek area, Illinois. Eurypterida
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By: Kjellesvig-Waering, Erik N.
Type: Article
In: Fieldiana. Geology
Volume: 12
Issue: 6
Date: 1963-09-17
Page Range: 85--106
Publication info: [Chicago], Chicago Natural History Museum, 1945-