This listing is for a genuine Centrosaurus sp. rib fragment, discovered in the Judith River Formation of Montana, USA. Dating back approximately 76 million years to the Late Cretaceous period, this piece once belonged to a member of the ceratopsian family – the horned dinosaurs. • Species: Centrosaurus sp. (indeterminate species) • Formation: Judith River • Location: Montana, USA • Age: ~76 million years old (Campanian Stage, Late Cretaceous) • Fossil Type: Rib fragment • Condition: Natural fossil with clear rib curvature and surface texture. No significant restoration.
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