Genuine Jurassic Ammonite Fossil 5.65"

This polished Jurassic Ammonite Fossil, weighing 1.58 pounds with a 5.65-inch diameter and 1.39-inch thickness, showcases the intricate spiral shell of a marine mollusk that thrived between the Paleozoic and Mesozoic eras. Its chambered structure—used for buoyancy control—offers a direct glimpse into the sophisticated adaptations of these predatory creatures from Earth’s ancient seas. Ideal for collectors and educators, it presents a tangible link to prehistoric marine life.