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Ammonite Fossil Pairs

About Ammonite Fossils

Ammonites are an extinct group of marine animals belonging to the phylum Mollusca, shelled cephalopods similar to the nautilus. These specimens crystallized over millions of years and are filled with calcite crystals, making it possible to slice them in half to display the beautiful structure of the shell chambers.

  • Fossil type: Cleoniceras, ammonite
  • Age: Cretaceous period, 102-110 million years old
  • Origin: Mahajanga, Madagascar
SKU: ammo-01 Category: Tags: ,

Unique specimens of ammonite fossil pairs from Madagascar.

  • Fossil type: Cleoniceras, ammonite
  • Age: Cretaceous period, 102-110 million years old
  • Origin: Mahajanga, Madagascar

About Ammonite Fossils

The name ammonite is derived from the Egyptian god Ammon, due to the resemblance of the shell to ram horns, which were associated to this divinity.

Ammonites have been collected since prehistoric times. They became extinct at the end of the cretaceous period. The main hypothesis regarding the global mass extinction that happened at that time involves an asteroid collision, which would have halted photosynthesis and had a major impact on food availability for ammonites and dinosaurs alike, leading to their disappearance.

Weight 140 g
Dimensions 3.5 × 2.5 × 0.75 in
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1, 2, 3, 4, 5

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