Octamerella
| Octamerella Temporal range: M Silurian
| |
|---|---|
| Scientific classification | |
| Kingdom: | |
| Phylum: | Mollusca
|
| Class: | |
| Subclass: | |
| Order: | |
| Family: | |
| Genus: | Octamerella Teichert and Sweet (1962)
|
Octamerella is an extinct genus of prehistoric nautiloids from the oncocerid family Hemiphragmoceratidae that lived in what is now Europe and North America during the Middle Silurian.
Octamerella has a breviconic shell and a mature aperture that is contracted so as to have four pairs of dorsolateral sinusus, four on each side, and a narrow mid-dorsal salient. The two ventral-most sinus pairs are typically the largest, while the dorsal-most pair is short and wide, forming a circular opening.[1]
See also[]
- Nautiloid
- List of nautiloids
References[]
- ^ Sweet, 1964
- Sweet, W.C. 1964. Nautilodea-Oncocerida; Treatise on Invertebrate Paleontology, Part K; Geol Soc of America and Univ Kansas Press, Teichert & Moore eds.
- 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. Sepkoski's Online Genus Database (CEPHALOPODA)
- Fossilworks: Octamerella
 | This prehistoric nautiloid-related article is a stub. You can help Wikipedia by . |
Categories:
- Silurian cephalopods
- Silurian animals of Europe
- Silurian cephalopods of North America
- Prehistoric nautiloid genera
- Prehistoric nautiloid stubs
- Silurian animal stubs