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Ammonites

Ammonite fossils are extinct cephalopod (mollusk) life forms that lived and thrived in the Jurassic/cretaceous period, approximately 100-250 million years ago. They were highly successful predators of the seas, but became extinct about the same time as dinosaurs from reasons unknown. These Madagascar ammonites represent some of the best preserved specimens found anywhere in the world, and most contain ammolite like fire in rainbow colors, and amazing fine suture lines, made during shell growth.