Probrachylophosaurus

Generic ornithopod body-plan outline
You 1.8 m (5.9 ft) tall
Probrachylophosaurus 10 m (33 ft) long
as long as 6 people standing fingertip to fingertip
generic ornithopod body plan, scaled to length — not a silhouette of Probrachylophosaurus
Length
10 m (33 ft)
Period
Late Cretaceous (80.45–79 Mya)
Place
North America · Alberta, Canada · Montana, USA
Food
Herbivore
Clade
Hadrosauridae Dinosauria Ornithischia Cerapoda Ornithopoda Iguanodontia Duck-billed dinosaurs with tooth batteries.

Probrachylophosaurus is a genus of hadrosaurid dinosaur that lived during the Late Cretaceous in North America. Fossils have been found in rocks of the Judith River Formation in Montana and the Foremost Formation in Alberta, and date to the Campanian age, 80.45–79 million years ago. The only recognized species is Probrachylophosaurus bergei. First discovered in Montana in 1981 and not fully excavated until 2008, it was initially suspected to be a new species of Brachylophosaurus. However, in 2015 it was named as a distinct genus, with its name reflecting a suspected ancestral relationship. Both an adult and subadult specimen were originally recognized, and in 2021 fragmentary remains would extend its known range into the Foremost Formation.

What we know

  • Named by Freedman Fowler & Horner, 2015.
  • Body length estimated at about 10 m.
  • Fossils found in North America and Alberta, Canada.

What we guess

The reconstruction notes for Probrachylophosaurus — soft tissue, color, behavior — haven't been written up yet. Only the recorded basics above are filled in so far.