Ammonite, 1940 grams
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What are Ammonites?
Ammonites were a group of mollusks living in the sea, which includes the current squid. Today these animals have their shell inside, but the Ammonites still had their shell outside the body, just like snails. The ammonite is about 112 million years old and completely fossilized. This copy has been polished. This makes the sutures that gave chambers strength clearly visible. This ammonite has a fracture on top, creating a hole so that the hollow chamber has become visible.
Fossil ammonite from Madagascar
The most beautiful ammonites are found in Madagascar and can measure up to 25 centimeters in diameter. This ammonite belongs to the Cleoniceras family. Calcite crystals are found in some hollow chambers. These are actually crystal geodes within the fossil. Ammonites became extinct about 65 million years ago, just like the dinosaurs.