Nautilus clarkanus

"Nautilus" clarkanus Temporal range: Carboniferous
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Cephalopoda
Subclass:	Nautiloidea
Order:	Nautilida
Family:	Nautilidae
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