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The Mystery of the Horned Dinosaur
Nonfiction Ages 9-12
Pages: 56
Themes: palaeontology, dinosaurs, fossils, Pachyrhinosaurus
Publisher: Heritage House Publishing
Pub Date: 21/Mar/2006
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Pachyrhinosaurus follows two separate stories: the discovery of Pachyrhinosaurus fossils in northwestern Alberta and the sequence of events leading to this dinosaur’s abrupt demise 76 million years ago.

Pachyrhinosaurus, one of the rarest, least understood horned dinosaurs, lived during the late Cretaceous Period at the end of the 150-million-year Age of Dinosaurs. Pachyrhinosaurus was different in a striking way from other dinosaurs. Instead of the sweeping lances found on the faces of Triceratops and Centrosaurus, Pachyrhinosaurus had gnarly platforms of bone covering its nose and eyebrows. These bony fossil shields gave the dinosaur its name, which means "thicknose reptile."

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