1) Corythosaur 2) Duck-billed dinosaur 3) Hadrosaur 4) Hadrosaurus
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https://www.crosswordclues.com/clue/corythosaurus
1) Corythosaur
Found on
https://www.crosswordclues.com/clue/corythosaurus
Corythosaurus intermedius (Parks, 1923 [originally Stephanosaurus]) | synonyms = Corythosaurus s is a genus of hadrosaurid `duck-billed` dinosaur from the Upper Cretaceous Period, about 77-75.7 million years ago. It lived in what is now North America. Its name means `helmet lizard`, derived from Greek. It was named and described in 1914 by Bar...
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http://en.wikipedia.org/wiki/Corythosaurus
(from the article `dinosaur`) ...for the peculiar crests and projections on the top of the head. These structures were expansions of the skull composed almost entirely of the ...
Found on
http://www.britannica.com/eb/a-z/c/146
(pronounced co-RITH-oh-SAWR-us) Corythosaurus was a 30 ft (9 m) long, 5000 kg plant-eating, helmet-crested, duck-billed dinosaur from the late Cretaceous period , about 76 to 72 million years ago. The type species is C. casuarius.
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http://www.enchantedlearning.com/subjects/dinosaurs/glossary/
Corythosaurus was a herbivore dinosaur from the Cretaceous period. It had a duck-like bill filled with hundreds of tiny teeth which were probably used for mincing leaves. Corythosaurus was about 10 metres long, walked on its hind legs and had a hollow crescent on top of its head which varied between species and individuals, the crest developing as ...
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http://www.probertencyclopaedia.com/browse/BCA.HTM
Corythosaurus A “helmet lizard” from Late Cretaceous Alberta, Canada. It had a hollow, helmet-shaped crest on top of its long, narrow head. The name comes from Greek koryth, korys,“helmet, crown of the head”. Named by paleontologist Barnum Brown (1873-1963) in 1914.
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http://www.wordinfo.info/words/index/info/view_unit/2727/9
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