Nautilus clarkanus
| "Nautilus" clarkanus Temporal range: Carboniferous
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| Genus: | "Nautilus"
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| Species: | "N." clarkanus
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| "Nautilus" clarkanus Hall, 1858
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"Nautilus" clarkanus is an extinct species of nautiloid. It lived during the Lower Carboniferous. Fossil specimens have been uncovered in the Spergen Hill Limestone formation of Indiana.
References
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