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Definition of: stegosaurus
Our photo definition of stegosaurus 
(steg′ə·sôr′əs) noun plural ·sau·ri (-sôr′ī) Paleontol.
Any of a genus (Stegosaurus) of herbivorous armored dinosaurs of great size which flourished in the western United States during the Upper Jurassic and Lower Cretaceous periods. [<NL <Gk. stegos roof + -SAURUS]
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