Coelurosauria from Greek κοῖλος + οὐρά + σαύρα + -ia, meaning "hollow-tailed lizards", is the clade containing all theropod dinosaurs more closely related to birds than to carnosaurs.
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T. R. Holtz. 1994. The phylogenetic position of the Tyrannosauridae: implications for theropod systematics. Journal of Paleontology 68(5):1100-1117
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