- Nautilus clarkanus
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"Nautilus" clarkanus
Temporal range: CarboniferousScientific classification Kingdom: Animalia Phylum: Mollusca Class: Cephalopoda Order: Nautilida Genus: "Nautilus" Species: "N." clarkanus Binomial name "Nautilus" clarkanus
Hall, 1858"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.
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