Section Ammonite Speetoniceras

  • €3,200.00
  • Origin: Russia
  • Product Code: AMM-08
  • Age: Early Cretaceous, Hauterivian
  • Locality: Ulyanovsk, Volga River
  • Dimensions (L x W x H): 340mm × 310mm × 90mm
  • Weight: 10.40kg


Even if the ammonite is one of the most common fossils in the world, a piece like this is a true rarity. It stands out not only for its size (34cm diameter), but also for the beauty of its fossilization.
Many conditions are required for the pyritization of the animal's tissues. The initial process of decomposition with anaerobic bacteria begin producing Sulphur that reacts with irony material so to produce iron sulfide. Then this is used by aerobic bacteria to produce the final stage of the pyrite that substitutes the soft parts of the animal.
The beauty of this pair of ammonites stands also in the exceptional and very elegant color matching between the gold of the pyrite and the black background (that is less common than the brown).
A marvelous home decor that will give majesty to any environment, be it an office, a professional studio or the hall of a hotel.

Tags: ammonite, speetoniceras versicolar, pyrite, fossil, russia