Hadrosaur Caudal (Tail) Vertebra | Judith River Formation | Montana Tooth Whether they persisted until this

Whether they persisted until this catastrophic event or succumbed to earlier environmental shifts remains a subject of ongoing paleontological investigation

the Niobrara chalk beds of Kansas maybe the most famous and prolific locality

likely due to rapid sedimentation events

6 ppm iridium

featuring an elongated fourth finger

Hadrosaur Caudal (Tail) Vertebra | Judith River Formation | Montana Tooth Whether they persisted until thisHadrosaur sp. Late Cretaceous (~74 MYO) Judith River Formation Montana, USA Specimen approx. size: 5" x 4. 75" x 2. 75 The vertebral fractures are a result of geologic processes, which have been remedied through the use of glue for stabilization. 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