Lytoceras fimbriatum is an ammonite species belonging to the family Lytoceratidae.

These cephalopods were fast-moving nektonic carnivores.

They lived in the Jurassic period.

Shells of Lytoceras cornucopia can reach an average diameter of about 74 millimetres (2.9 in).

[1] Fossils of species within this genus have been found in the Jurassic rocks of France, Germany, Hungary, Morocco, Portugal, Spain, Tunisia, Turkey, United Kingdom and United States.