Species: Maiasaura peeblesorum

Formation: Two Medicine Formation

Location: Teton County, Montana

Age: Campanian Cretaceous, 80-74 million years old

This is an authentic Fossil Maiasaura Chevron Fragment from the Two Medicine Formation of Montana.

Hadrosaur bones generally cannot be confidently assigned to a particular species, as many species of hadrosaur are found in most formations, and isolated bones are not diagnostic in most cases.

But in this case, the bone comes from a bonebed where the hadrosaur material found has all been identified as Maiasaura thus far, making this a piece that can be confidently ID’ed.

Other species of hadrosaur in the Two Medicine Formation include Gryposaurus, Prosaurolophus, Acristavus, and Hypacrosaurus.

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