Cliftonoceras

Cliftonoceras Temporal range: Llandovery PreЄ Є O S D C P T J K Pg N
Scientific classification
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Cephalopoda
Subclass:	Nautiloidea
Order:	†Tarphycerida
Family:	†Uranoceratidae
Genus:	†Cliftonoceras Flower, 1957
Species
See text

Cliftonoceras is a barrandeoceroid type tarphycerid from the Uranoceratidae characterized by a smooth gyroconic shell with a rounded dorsum and flattened venter, and by a subvental siphuncle composed of thin connecting rings and necks that are straight ventrally, recumbent dorsally.

Cliftonoceras has been found in Middle Silurian age sediments in Tennessee and Indiana. The type species is C. quadratum.

References

• Sweet, Walter C. 1964. Nautiloidea-Barrandeocerida. Treatise on Invertebrate Paleontology, Part K. Geol Soc of America and Univ Kansas Press.

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