Lyelliceras

Lyelliceras
Temporal range: Cretaceous
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

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]

Description

Shells of Lyelliceras species can reach a diameter of about 50 millimetres (2.0 in). The are moderately to very evolute. The section of the whorls is slightly compressed or circular, with straight radial ribs.[3][4]

Species

[1]

Distribution

Fossils of species within this genus have been found in the Cretaceous sediments of Colombia, France, Madagascar, Mexico, Peru, South Africa, United Kingdom, United States and Venezuela.[1]

References

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