Lyelliceras
{{Short description|Genus of molluscs (fossil)}}
{{Automatic taxobox
| fossil_range = Albian
~{{fossil range|109.0|99.7}}
| image = Lyelliceratidae - Lyelliceras lyelli.JPG
| image_caption = Fossil of Lyelliceras lyelli from Peru
| taxon = Lyelliceras
| authority = Spath, 1921
| subdivision_ranks = Species
| subdivision = 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).[https://paleobiodb.org/classic/checkTaxonInfo?taxon_no=15141 Lyelliceras] at Fossilworks.orgSepkoski, Jack [http://strata.geology.wisc.edu/jack/showgenera.php?taxon=231&rank=class Sepkoski's Online Genus Database - Cephalopodes]
Etymology
The genus has been named after geologist Charles Lyell.
Description
Shells of Lyelliceras species can reach a diameter of about {{convert|50|mm}}. They are moderately to very evolute. The section of the whorls is slightly compressed or circular, with straight radial ribs.[http://crioceratites.free.fr/descript_lyelliceras.htm Crioceratites][http://www.ammonites.fr/Fiches/0195.htm Ammonites]
Species
The following species have been recognised:
- Lyelliceras escragnollensis {{small|Kennedy, 2011}}
- Lyelliceras latili {{small|Kennedy and Klinger, 2008}}
- Lyelliceras lyelli {{small|(d'Orbigny, 1841)}}
- Lyelliceras pseudolyelli {{small|Parona and Bonarelli, 1897}}
- Lyelliceras vaasti {{small|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.
References
{{Portal|Paleontology}}
{{Reflist}}
{{Taxonbar|from=Q12262754}}
Category:Ammonites of North America
Category:Cretaceous United States
Category:Ammonites of South America
Category:Fossil taxa described in 1921
Category:Albian genus extinctions
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