This is an exceptional pair of associated phalanges from the fourth digit of a hadrosaur — the iconic "duck-billed" dinosaurs that dominated the landscapes of Late Cretaceous North America. What makes this specimen particularly special is that these two bones (phalanx IV-3 and IV-4) were found together, meaning they almost certainly came from the same individual animal. Associated skeletal elements like this are relatively uncommon finds and offer a more complete picture of hadrosaur anatomy than isolated bones.

Hadrosaurs were among the most successful and abundant dinosaurs of the Late Cretaceous period, approximately 66 to 80 million years ago. These large herbivores could reach lengths of 30 feet or more and traveled in herds across the ancient floodplains, river systems, and coastal environments that would become modern-day Montana. Their robust limbs and well-developed feet supported their massive bodies as they foraged on the diverse vegetation of the Cretaceous world — sharing their environment with apex predators like Tyrannosaurus rex and armored giants like Triceratops and ankylosaurs.

Recovered from either the Judith River Formation or Hell Creek Formation of Montana, this specimen represents the final chapters of the Age of Dinosaurs. Both formations are world-renowned among paleontologists for their exceptional preservation of Late Cretaceous fauna, though precise species attribution within Hadrosauridae requires more complete skeletal material for definitive identification.

Specimen Highlights:

• Type: Authentic associated hadrosaur phalanges — digit IV, phalanx 3 and phalanx 4 from the same individual
• Dimensions: IV-3 measures approximately 2.61 inches; IV-4 measures approximately 2.70 inches
• Condition: Excellent preservation with one professionally repaired break — stable and display-ready
• Provenance: Judith River or Hell Creek Formation, Late Cretaceous (~66–80 million years ago), Montana
• Authenticity Guarantee: 100% genuine dinosaur fossils

This associated pair of phalanges offers a tangible connection to the powerful limbs that once carried one of the most successful dinosaur groups across the ancient landscapes of North America. Holding these bones, you're touching pieces of an animal that lived alongside tyrannosaurs, ceratopsians, and the last of the great Mesozoic ecosystems before the mass extinction event that ended the Age of Dinosaurs.

Perfect for paleontology collections, natural history displays, educational teaching aids, cabinets of curiosity, or as an exceptional gift for dinosaur enthusiasts and anyone fascinated by the magnificent herbivores of the Cretaceous period. Feel free to reach out with any questions about this specimen or for additional photos and measurements. Ships securely packaged with care. Thank you for supporting ethical fossil collecting!