Litoceras

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title: "Litoceras" type: doc version: 1 created: 2026-02-28 author: "Wikipedia contributors" status: active scope: public tags: ["prehistoric-nautiloid-genera", "early-ordovician-first-appearances", "middle-ordovician-extinctions", "paleozoic-life-of-newfoundland-and-labrador", "tarphycerida"] description: "Extinct genus of nautiloids" topic_path: "general/prehistoric-nautiloid-genera" source: "https://en.wikipedia.org/wiki/Litoceras" license: "CC BY-SA 4.0" wikipedia_page_id: 0 wikipedia_revision_id: 0

::summary Extinct genus of nautiloids ::

| fossil_range = | taxon = Litoceras | authority = Hyatt, 1884

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

Species

Species within the genera Litoceras include:

• Litoceras calciferum (Billings, 1865)
• Litoceras versutum (Billings, 1865)
• Litoceras whiteavsi Hyatt, 1894

References

• 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.

References

1. "Paleobiology Database: Litoceras". Paleodb.org.
2. "Paleobiology Database: Litoceras calciferum". Paleodb.org.
3. "Paleobiology Database: Litoceras versutum". Paleodb.org.
4. "Paleobiology Database: Litoceras whiteavsi". Paleodb.org.

::callout[type=info title="Wikipedia Source"] This article was imported from Wikipedia and is available under the Creative Commons Attribution-ShareAlike 4.0 License. Content has been adapted to SurfDoc format. Original contributors can be found on the article history page. ::