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dromaeosaur

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ThesaurusLegend:  Synonyms Related Words Antonyms
Noun1.dromaeosaur - a kind of maniraptor
maniraptor - advanced carnivorous theropod
Dromaeosauridae, family Dromaeosauridae - swift-running bipedal dinosaurs

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gonzalezorum probably couldn't have sustained powered flight, "it's not out of the realm [of possibility] that a common ancestor of Archaeopteryx and dromaeosaurs could have been a flyer," he notes.
Since nonflying dromaeosaurs existed before birds, Norell considers this specimen the best evidence so far that animals developed feathers to keep warm before they ever used them to fly.
 
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