Acrocanthosaurus (s {respell|ak-rə|KAN|thə|SOR|əs}; meaning `high-spined lizard`) is a genus of theropod dinosaur that existed in what is now North America during the Aptian and early Albian stages of the Early Cretaceous. Like most dinosaur genera, Acrocanthosaurus contains only a single species, A. atokensis. Its fossil remains are found ma.....
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http://en.wikipedia.org/wiki/Acrocanthosaurus
Acrocanthosaurus was a dinosaur of the Cretaceous period, remains of which were first discovered in 1950 in Oklahoma, USA, Acrocanthosaurus was a carnivore, about 12 metres long, believed to walk semi-upright on two hind legs and had 30 cm long spines on its backbone which may have supported a ridge or sail along its back.
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http://www.probertencyclopaedia.com/browse/BA.HTM
Acrocanthosaurus A “high-spined lizard” from Early Cretaceous Oklahoma , Utah, and Texas, USA. Named by U.S paleotologists John Willis Stovall and Wann Langston, Jr. in 1950.
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http://www.wordinfo.info/words/index/info/view_unit/2372/
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