| Lyelliceras Temporal range: Albian
~ | |
|---|---|
| |
| Fossil of Lyelliceras lyelli from Peru | |
Scientific classification 
| |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Cephalopoda |
| Subclass: | †Ammonoidea |
| Order: | †Ammonitida |
| Family: | †Lyelliceratidae |
| Genus: | †Lyelliceras Spath, 1921 |
| Species | |
|
See text | |
Lyelliceras is a genus of ammonites belonging to the family Lyelliceratidae. These cephalopods were fast-moving nektonic carnivores. They lived in the Cretaceous period, Albian stage (109.0 to 99.7 Ma).[1][2]
Etymology[edit]
The genus has been named after geologist Charles Lyell.
Description[edit]
Shells of Lyelliceras species can reach a diameter of about 50 millimetres (2.0 in). They are moderately to very evolute. The section of the whorls is slightly compressed or circular, with straight radial ribs.[3][4]
Species[edit]
The following species have been recognised:[1]
- Lyelliceras escragnollensis Kennedy, 2011
- Lyelliceras latili Kennedy and Klinger, 2008
- Lyelliceras lyelli (d'Orbigny, 1841)
- Lyelliceras pseudolyelli Parona and Bonarelli, 1897
- Lyelliceras vaasti Destombes et al., 1973
Distribution[edit]
Fossils of species within this genus have been found in the Cretaceous sediments of Colombia (Hiló Formation, Tolima), France, Madagascar, Mexico, Peru, South Africa, United Kingdom, United States and Venezuela.[1]
References[edit]
- ^ a b c Lyelliceras at Fossilworks.org
- ^ Sepkoski, Jack Sepkoski's Online Genus Database - Cephalopodes
- ^ Crioceratites
- ^ Ammonites