Sinoceras
| Sinoceras Temporal range: Middle Ordovician–Devonian | |
|---|---|
 | |
| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Cephalopoda |
| Subclass: | Nautiloidea |
| Order: | Orthocerida |
| Family: | Orthoceratidae |
| Genus: | Sinoceras Shimizu & Obata, 1935 |
Sinoceras is an extinct nautilid genus from China included in the family Orthoceratidae that lived during the period from perhaps the middle Ordovician to as late as perhaps the Devonian.
Sinoceras is like Michelinoceras in that it has a slender orthoconic shell but the camerae are shorter and septal necks proportionally longer, reaching nearly a third the camera length. The surface in some is marked either by very fine irregular striae or by sinuous transverse growth bands. Doubtfully distinct from Michelinoceras.
References
- Sweet, Walter C. 1964. Nautiloidea-Orthocerida. Treatise on Invertebrate Paleontology, Part K. Geological Soc of America, and Univ Kansas Press.
- Sepkoski, J.J. Jr. 2002. A compendium of fossil marine animal genera. D.J. Jablonski & M.L. Foote (eds.). Bulletins of American Paleontology 363: 1–560.
- see List of nautiloids