Biology:Litoceras
From HandWiki
Short description: Extinct genus of nautiloids
| Litoceras | |
|---|---|
Scientific classification 
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| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Cephalopoda |
| Subclass: | Nautiloidea |
| Order: | †Tarphycerida |
| Family: | †Trocholitidae |
| Genus: | †Litoceras 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[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.
Species
Species within the genera Litoceras include:[1]
- Litoceras calciferum (Billings, 1865)[2]
- Litoceras versutum (Billings, 1865)[3]
- Litoceras whiteavsi Hyatt, 1894[4]
References
- ↑ "Paleobiology Database: Litoceras". Paleodb.org. http://paleodb.org/?a=basicTaxonInfo&taxon_no=13378. Retrieved 20 August 2013.
- ↑ "Paleobiology Database: Litoceras calciferum". Paleodb.org. http://paleodb.org/?a=basicTaxonInfo&taxon_no=171506. Retrieved 20 August 2013.
- ↑ "Paleobiology Database: Litoceras versutum". Paleodb.org. http://paleodb.org/?a=basicTaxonInfo&taxon_no=171508. Retrieved 20 August 2013.
- ↑ "Paleobiology Database: Litoceras whiteavsi". Paleodb.org. http://paleodb.org/?a=basicTaxonInfo&taxon_no=171505. 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.
Wikidata ☰ Q6648643 entry
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