Lyelliceras
| Lyelliceras Temporal range: Albian ~109.0–99.7 Ma | |
|---|---|
 | |
| Fossil of Lyelliceras lyelli from Peru | |
| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Cephalopoda |
| Subclass: | Ammonoidea |
| Order: | Ammonitida |
| Superfamily: | Acanthoceratoidea |
| Family: | Lyelliceratidae |
| Genus: | Lyelliceras Spath 1921 |
|
See text | |
Lyelliceras is a genus of ammonites belonging to the family Gaudryceratidae. These cephalopods were fast-moving nektonic carnivores. They lived in the Cretaceous period, Albian stage (109.0 to 99.7 Ma).[1][2]
Etymology
The genus has been named after geologist Charles Lyell.
Description
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
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
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
- 1 2 3 Lyelliceras at Fossilworks.org
- ↑ Sepkoski, Jack Sepkoski's Online Genus Database - Cephalopodes
- ↑ Crioceratites
- ↑ Ammonites
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