Hesperosaurus
Dinosaur
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Hesperosaurus is a herbivorous stegosaurian dinosaur from the Kimmeridgian age of the Jurassic period, approximately 156 million years ago.
Fossils of Hesperosaurus have been found in the state of Wyoming and Montana in the United States of... Wikipedia
Lived: 154 million years ago - 142 million years ago (Oxfordian - Kimmeridgian)
Mass: 7,700 lbs
Length: 20 – 23 ft.
Scientific name: Hesperosaurus (Western lizard)
Genus: †Hesperosaurus; Carpenter, Miles & Cloward, 2001