coelurosaur


Concise Oxford English Dictionary © 2008 Oxford University Press:
coelurosaur /sɪˈljʊərəsɔː/
noun a small slender bipedal carnivorous dinosaur with long forelimbs, believed to be an evolutionary ancestor of birds.
– origin 1950s: from Gk koilos ‘hollow’ + oura ‘tail’ + sauros ‘lizard’.
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