The Landslide Butte expeditions
Einiosaurus is an exclusively Montanan dinosaur, and all of its known remains are currently held at the Museum of the Rockies in Bozeman, Montana. At least fifteen individuals of … See more

The placement of Einiosaurus within Centrosaurinae is problematic due to the transitional nature of several of its skull characters, and its closest relatives are either Centrosaurus and Styracosaurus or Achelousaurus and Pachyrhinosaurus. The latter hypothesis is … See more

Einiosaurus fossils are found in the upper part of the Two Medicine Formation of Montana, dating to the mid-late Campanian stage of the late Cretaceous Period, about 74.5 … See more

Size and distinguishing traits
Einiosaurus was a herbivorous dinosaur. It is generally as large as Achelousaurus, though far less robust. In 2010, Gregory S. Paul estimated the body length of Einiosaurus at 4.5 metres (15 ft), its weight at 1.3 tonnes (1.3 … See more

Low-diversity and single-species bonebeds are thought to represent herds that may have died in catastrophic events, such as during a drought or flood. This is evidence that Einiosaurus, as well as other centrosaurine ceratopsians such as Pachyrhinosaurus See more

• Timeline of ceratopsian research See more

1. ^ Horner & Dobb 1997, p. 57.
2. ^ Horner & Dobb 1997, pp. 58–60.
3. ^ Horner & Dobb 1997, p. 61.
4. ^ Horner & Dobb 1997, p. 64. See more