Biology:Franklinoceras

Franklinoceras Temporal range: early Middle Ordovician
Scientific classification
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Cephalopoda
Subclass:	Nautiloidea
Order:	Discosorida
Family:	Reudemannoceratidae
Genus:	Franklinoceras Flower (1957)

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
  • Discosorida
• 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)

Wikidata ☰ Q16982118 entry