Juvenile Hadrosaur Lower Jaw Section | Judith River Formation | Montana

Hadrosaur sp.Late Cretaceous (~74 MYO)Judith River FormationMontana, USA   Specimen approx. size: 5" x 4.5" x 2"   The fractures are a result of geologic processes, which have been remedied through the use of glue for stabilization. This partial lower jaw section from a juvenile hadrosaur features a portion of dental battery. However, no teeth are present.   Hadrosaurs, often called "duck-billed dinosaurs," are a family of ornithopod dinosaurs (family Hadrosauridae) that thrived during the Late Cretaceous period. They are among the most well-known and successful herbivorous dinosaurs. Hadrosaurs are characterized by: Broad, flattened rostrums (beak-like snouts) resembling a modern duck’s bill, used for cropping vegetation. Hundreds of tightly packed teeth forming a dental battery, ideal for grinding tough, fibrous plant material. Large, barrel-shaped torsos and relatively long, muscular tails, likely used for balance. Bipedal and quadrupedal locomotion. They could walk both on t