Cochlioceras
| Cochlioceras Temporal range: | |
|---|---|
Scientific classification  | |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Cephalopoda |
| Order: | †Orthocerida |
| Family: | †Baltoceratidae |
| Genus: | †Cochlioceras Eichwald (1860) |
Cochlioceras is an extinct baltoceratid genus from the lower and middle Ordovician (Arenig - Llanvrin) of what are now Europe, the U.S. (Vermont), and China, having existed for approximately 14 million years, from about 478 to 464 mya.[1]
Taxonomy
[edit]Cochlioceras was named by Eichwald (1860). Its type is Cochlioceras avus. It was assigned to the Baltoceratidae by Furtnish and Glensiter in Teichert et al. (1964)[1] and removed, with the Baltoceratidae, from the Ellesmerocerida to the Orthocerida by Kroger et al. (2007)[2]
References
[edit]- 1 2 Teichert et al 1964, Treatise on Invertebrate Paleontology Part K; Nautiloidea - Ellesmerocerida by W.M. Furnish and Brian F. Glenister, pp K129 -K160.
- ↑ Kroger, B. (2007). "Early orthoceratoid cephalopods from the Argentine Precordillera". Journal of Paleontology. 81 (6): 1266–1283. doi:10.1666/06-013.1.
- PaleoBiology Database: Cochlioceras, basic info
- Fossils (Smithsonian Handbooks) by David Ward
