| Acanthoceras, Ammonites, Acanthoceratidae|
Acanthoceras rhotomagensis is an extinct cephalopod species belonging to the subclass Ammonoidea and family Acanthoceratidae.
These fast-moving nektonic carnivores lived during the Cenomanian stage of the Late Cretaceous (from 94.3 to 89.3 Ma).
Acanthoceras rhotomagensis Wikipedia
Shells of Acanthoceras rhotomagensis may reach a diameter of about 36–50 centimetres (14–20 in). Their shells have ornate ribs.
Acanthoceras rhotomagensis fossils may be found in Western Europe and western North America.