Franklinoceras
Franklinoceras is an extinct gensu of cephalopods from the nautiloid order, Discosorida. Nautiloids comprise a subclass of shelled cephalopods that were once diverse and numerous but are now represented by only a handful of species.
| Franklinoceras Temporal range: early Middle Ordovician | |
|---|---|
| Scientific classification | |
| Kingdom: | |
| Phylum: | |
| Class: | |
| Subclass: | |
| Order: | |
| Family: | |
| Genus: | Franklinoceras Flower (1957) |
Franklinoceras is an early discosorid from the family Reudemannoceratidae, similar to the ancestral Reudemannoceras. Both are from the early Middle Ordovician; both have endogastric cyrtocones, except in Franklinoceras they are compressed so as to be higher than wide, rather than the other way around as in Reudemannoceras (Teichert, 1964).
See also
- Reudemannoceratidae for further discussion of Reudemannoceras and Franklinoceras
- Nautiloidea
- List of nautiloids
References
- Teichert, C. (1964). Nautiloidea -Discosorida; Treatise on Invertebrate Paleontology Part K, Mollusca 3, R.C. Moore (ed) Univ. Kans. press.
- Sepkoski, J.J. Jr. (2002). "A compendium of fossil marine animal genera". Sepkoski's Online Genus Database (CEPHALOPODA)
This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.