Uranoceras

Uranoceras is a barrandeocerid genus from the Middle Silurian belonging to the family Uranoceratidae, characterized by its loosely coiled, gyroconic shell of 1.5 to 2 subquadrate whorls.

Uranoceras
Temporal range: Middle Silurian
Scientific classification
Kingdom: Animalia
Phylum: Mollusca
Class: Cephalopoda
Subclass: Nautiloidea
Order: Tarphycerida
Family: Uranoceratidae
Genus: Uranoceras
Hyatt, 1884

The shell of Uranoceras is typically smooth but may have growth lines that form a hyponomic sinus on the venter. The Siphuncle is large, displaced slightly ventral from the center. Septal necks are straight; connecting rings cylindrical, thin, and strongly contracted where they meet the necks.

Uranoceras has been found in Indiana, Illinois, and Wisconsin in the United States; Anticosti Island in Canada; and in both central and northern Europe.

See also

  • List of nautiloids

References


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