Rare pliosaur vertebra featuring striking pyrite replacement, transforming the fossil's original structure into gleaming metallic crystals. Sourced from the Volga River in Russia's Ulyanovsk Region, this specimen showcases the geological artistry of mineral-altered paleontology. Measuring 6.5 x 1.5 x 6 cm, it's a compelling addition to any serious fossil or mineral collection, combining vertebrate paleontology with crystalline beauty.
