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This striking fossil specimen originates from the Late Cretaceous Lance Formation of Wyoming, a world-renowned site rich with remains of iconic dinosaurs like Edmontosaurus, Triceratops, and Tyrannosaurus rex. The piece likely belonged to a large hadrosaurid or ceratopsian, evidenced by its dense structure, robust mineralization, and unique texture. The flat yet angular profile and surface morphology suggest it may be part of a dermal scute or bony plating, possibly from the pelvic or flank region — areas known to possess ossified skin elements or armor-like reinforcements in these massive herbivores. What sets this piece apart is its well-preserved natural texture, displaying intricate bone fiber patterns and a smooth surface indicative of long-term fossilization in Lance’s iron-rich sediments. Whether a piece of defensive armor or a structural plate, this fossil is a tangible remnant of one of North America’s last great dinosaurs, making it a compelling addition to any collection