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Thompson & Johnson, 1977
| Author(s): | Thompson, I., Johnson, R. G. |
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| Year: | 1977 |
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| Title: | New fossil polychaete from Essex, Illinois |
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| Journal: | Fieldiana: Geology |
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| Volume: | 33 |
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| Pages: | 471-487 |
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| DOI: | https://doi.org/10.5962/bhl.title.5176 |
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| Remarks: | Middle Pennsylvanian |
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| New genera described: | |
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| New species described: | |
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