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Description
Name meaning: Perforated Lizard/ Bull Lizard

Length: 8 m (26 ft)

Weight: 6 tons

Popularity: 3 stars

Period: Late Cretaceous

Found: USA (Hell Creek Formation in Montana, North Dakota, South Dakota; Lance Formation in Wyoming; North Horn Formation in Utah; Laramie Formation in Colorado; McRae Formation in New Mexico; Javelina Formation in Texas), Canada (Frenchman Formation in Saskatchewan, Scollard Formation in Alberta)

This horned herbivore had the largest skull of any animal that walked planet Earth and got its name for two holes in its rectangular frill which was solid enough to provide additional armor when attacked. It lived in small herds and charged its horns at predators like a modern bull. It could engage in dominance display and males would lock horns with each other fighting for a mate.

Description
Name meaning: Perforated Lizard/ Bull Lizard

Length: 8 m (26 ft)

Weight: 6 tons

Popularity: 3 stars

Period: Late Cretaceous

Found: USA (Hell Creek Formation in Montana, North Dakota, South Dakota; Lance Formation in Wyoming; North Horn Formation in Utah; Laramie Formation in Colorado; McRae Formation in New Mexico; Javelina Formation in Texas), Canada (Frenchman Formation in Saskatchewan, Scollard Formation in Alberta)

This horned herbivore had the largest skull of any animal that walked planet Earth and got its name for two holes in its rectangular frill which was solid enough to provide additional armor when attacked. It lived in small herds and charged its horns at predators like a modern bull. It could engage in dominance display and males would lock horns with each other fighting for a mate.