Eoderoceras

Eoderoceras Temporal range: Sinemurian[1] PreЄ Є O S D C P T J K Pg N
Scientific classification
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Cephalopoda
Subclass:	Ammonoidea
Order:	Ammonitida
Superfamily:	Eoderocerataceae
Family:	Eoderoceratidae
Genus:	Eoderoceras Spath, 1925

Eoderoceras is an evolute, round whorled ammonite from the Lower Jurassic with an outer row of distinct spines, and in some, an inner row of tubercles, on either side; ribs only on the inner whorls.

Eoderoceras, named by Leonard Spath in 1925, is the type genus for the family Eoderoceratidae to which it belongs, which is part of the ammonitid superfamily Eoderocerataceae, ammonoid cephalopods distinct from the more conservative but more successful Nautiloidea still around today.

References

1. Sepkoski, Jack (2002). "Sepkoski's Online Genus Database". Retrieved 2014-05-28.

• Arkell, et al., 1957. Mesozoic Ammonoidea, in Treatise on Invertebrate Paleontology, (Part L); Geological Soc. of America and University of Kansas press
• Donovan, Callomon and Howarth 1981 Classification of the Jurassic Ammonitina; Systematics Association.