A new dome-headed dinosaur species was discovered in Montana, a study released this month shows.

Researchers discovered the fossils of Brontotholus harmoni, a dome-headed dinosaur in Montana, according to the paper published Oct. 9 in the Zoological Journal of the Linnean Society.

It’s the first pachycephalosaurid from the Late Cretaceous period to be found in the Two Medicine Formation in Glacier County, Montana.

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