Coelurosauria

Coelurosauria /sɨˌljʊərəˈsɔriə/ (from Greek, meaning "hollow tailed lizards") is the clade containing all theropod dinosaurs more closely related to birds than to carnosaurs. In the past, it was used to refer to all small theropods, although this classification has been abolished. Nonetheless, it is still a diverse group that includes compsognathids, tyrannosaurs, ornithomimosaurs, and maniraptorans; Maniraptora includes birds, the only dinosaur descendants alive today. Most feathered dinosaurs discovered so far have been coelurosaurs; Philip J. Currie considers it probable that all coelurosaurs were feathered.