| Coroniceras Temporal range: (Lower Sinermurian) Lower Jurassic |
|
|---|---|
| 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]
Coroniceras bucklandi
Coroniceras charlesi
Coroniceras rotiforme
Coroniceras validanfractum