This polished Jurassic Ammonite Fossil, weighing 11.9 pounds with a 9.5-inch diameter and 4.2-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 that lived over 66 million years ago. Ideal for collectors and educators, it presents a tangible link to prehistoric marine life.
