File:Pennsylvanian Invertebrates Of The Mazon Creek Area, Illinois Eurypterida Figure 49.jpg
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current | 13:03, 15 June 2011 | ![]() | 1,698 × 2,312 (2.68 MB) | Enomil | {{Information |Description=Pennsylvanian invertebrates of the Mazon Creek Area, Illinois: Eurypterida. ''Fieldiana, Geology''. Vol. 12, No. 6 (1963), figure 49 |Source=[http://www.archive.org/details/pennsylvanianinv126kjel archive.org] |Date=1963 |Author |
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