Rare pliosaur bone specimen featuring striking pyrite replacement, transforming the original fossil into a glittering mineral display piece. Sourced from the Volga River region of Ulyanovsk, Russia, this authentic marine reptile vertebra showcases the natural artistry of mineral permineralization. Approximately 8.5 x 5 x 1 cm. A museum-quality addition for serious fossil and mineral collectors seeking unique geological specimens with dual appeal—paleontological significance and crystalline beauty.
