| Ammonites, Kossmaticeras, Lissoceras, Hamites, Lytoceras cornucopia|
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).
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.Lyelliceras latili Kennedy and Klinger 2008
Lyelliceras lyelli d'Orbigny 1841
Lyelliceras pseudolyelli Parona and Bonarelli 1897
Lyelliceras vaasti Destombes et al. 1973
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.