A big one ! Name : Douvilleiceras mammilatum Age : low. cretaceous, Albian stage Provenance : Courcelles , France The ammonite itself has a diameter of 11 cm which make it big for the species. It comes from an old collection I recently bought. The location has been closed in the 1980s Please note some few spines may have been restored . The stone has been sawed for being self standing.