Английская Википедия:Franklinoceras
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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 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
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)
