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meaning: "Before Brachylophosaurus"
Named By: Elizabeth A. Friedman Fowler & John R. Horner in 2015
Time Period: Late Cretaceous, 79 Ma
Location: USA, Montana - Judith River Formation
Size: Holotype Estimated at up to 9 meters long. Possibly slightly larger when fully grown
Diet: Herbivore
Fossil(s): Partial skull and post cranial remains
Classification: | Chordata | Reptilia | Dinosauria | Ornithischia | Ornithopoda | Hadrosauroidea | Hadrosauridae | Saurolophinae |

Probrachylophosaurus bergei is a species of large herbivorous brachylophosaurin hadrosaurid dinosaur known from the Late Cretaceous Campanian Judith River Formation, of Montana.

The significance of this particular hadrosaur taxon is that it is a transitional species between the genera Acristavus and Brachylophosaurus evolving from a crestless ancestor (the former genus) to its crested descendant (the latter genus) while changing the morphology of its nasal bones.

Read more about Probrachylophosaurus at Wikipedia
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