2.2" Corythosaurus Fossil Vertebrae Bone Section Judith River Cretaceous Dinosaur COA

Location: Judith River Formation, Central Montana (Private Land Origin)

Weight: 1.9 Ounces

Dimensions: 2.2 Inches Long, 1.6 Inches Wide, 1.2 Inches Thick 

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Late Cretaceous, 83 million years old.

Name: Corythosaurus

Type: Herbivore

Size: 9 meters in length.

Corythosaurus is a genus of hadrosaurid, or “duck-billed,” dinosaurs that lived during the Upper Cretaceous Period, around 80 to 74 million years ago, within the Campanian age of the Mesozoic Era. These herbivorous dinosaurs possessed hundreds of small, interlocking teeth at the back of their jaws that helped them efficiently crush and grind plant material.

A distinctive feature of Corythosaurus was the large bony crest on top of its head. This crest contained part of the nasal passage and may have functioned as a sounding device, allowing the dinosaur to produce calls for communication. Corythosaurus also had a long, heavy tail and likely weighed between three and five tons when fully grown.

The first fossil evidence of Corythosaurus was discovered in the Judith River Formation, a geological area extending from Alberta, Canada, into Montana in the United States. The dinosaur was formally described in 1914.