Coroniceras

Coroniceras Temporal range: (Lower Sinermurian) Lower Jurassic PreЄ Є O S D C P T J K Pg N
Coroniceras rotiforme
Scientific classification
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Cephalopoda
Subclass:	Ammonoidea
Order:	Ammonitida
Superfamily:	Psilocerataceae
Family:	Arietitidae
Subfamily:	Arietitinae
Genus:	Coronicaras

Coroniceras is a genus in the Arietitidae, a family in the ammonitid superfamily Psiloceratiaceae, from the lower Sinermurian stage in the Lower Jurassic. It is a sub zone ammonite of the Armioceras semicostotum Zone

Coroniceras has a thin discoidal form with a circular whorl section, arched venter, single tall keel, and few but strong ribs. Coroniceras is included in the subfamily Arietitinae

Fossils of Coroniceras bucklandi are commonly found at Lyme Regis, Dorset Coast, England in the higher limestones of the Blue Lias.^[1]

Species

Coroniceras bucklandi

Coroniceras charlesi

Coroniceras rotiforme

Coroniceras validanfractum

References

1. ^ Davies, G. M. 1964. The Dorset Coast London: Adam and Chrles Black.