Nautilus clarkanus

"Nautilus" clarkanus Temporal range: Carboniferous
Scientific 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.

References

On the Fauna of the Lower Carboniferous limnestones of Spergen Hill, Ind., with a revision of the descriptions of its Fossils hitherto published, and illustrations of the species from the original type series

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