Eucalycoceras

Eucalycoceras is an extinct genus of cephalopods belonging to the Ammonite subclass.

Species

 * E. collignoni Fabre, 1940
 * E. denizoti Fabre, 1940
 * E. gothicum Kossmat, 1895
 * E. pentagonus Jukes-Browne, 1896

Description
Eucalycoceras are medium-sized ammonites, generally compressed, with flattened flanks and venter with dense tuberculate ribs.

Distribution
Fossils of this genus have been found in the Cretaceous of Antarctica, Brazil, France, the United Kingdom and United States.