Litoceras is a trocholitid (Tarphycerida) genus that has been found in the Lower and Middle Ordovician of Newfoundland. Whorls in Litoceras have a broadly[clarification needed] rounded cross section with its width greater than its height. Litoceras somewhat resembles the tarphyceratid Pionoceras from the same time, except for the siphuncle[clarification needed] being dorsal and in the center.

Litoceras
Temporal range: Early Ordovician–Middle Ordovician
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Mollusca
Class: Cephalopoda
Subclass: Nautiloidea
Order: Tarphycerida
Family: Trocholitidae
Genus: Litoceras
Hyatt, 1884

Species

edit

Species within the genera Litoceras include:[1]

References

edit
  1. ^ "Paleobiology Database: Litoceras". Paleodb.org. Retrieved 20 August 2013.
  2. ^ "Paleobiology Database: Litoceras calciferum". Paleodb.org. Retrieved 20 August 2013.
  3. ^ "Paleobiology Database: Litoceras versutum". Paleodb.org. Retrieved 20 August 2013.
  4. ^ "Paleobiology Database: Litoceras whiteavsi". Paleodb.org. Retrieved 20 August 2013.
  • Furnish, W.M and Glenister, Brian F (1964); Nautiloidea -Tarphycerida in the Treatise on Invertebrate Paleontology, Part L, Nautiloidea, Geological Society of America and Univ of Kansas press.