Joldagiroceras

Joldagiroceras Temporal range: Late Silurian PreꞒ Ꞓ O S D C P T J K Pg N
Scientific classification
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Cephalopoda
Subclass:	Nautiloidea
Order:	Orthocerida
Genus:	Joldagiroceras

Joldagiroceras is a genus of orthocerids that lived during the Late Silurian, Ludlovian stage. Othoderids are nautiloid cephalopods characterized generally by long straight shells with narrow central siphuncles.

References

• Jack Sepkoski's list of cephalopod genera [1]