Coelurosaurians Temporal range: Middle Jurassic–Present, Possible Early Jurassic record
A collection of coelurosaurian fossil skeletons: (Clockwise from upper left) GIN 100/42 which may represent Citipati or a different oviraptorosaur, Sinosauropteryx prima(a feathered compsognathid, Nothronychus mckinleyi(a therizinosaur), Tyrannosaurus rex(a large carnivorous tyrannosaur), Bambiraptor feinbergi(a small dromaeosaurid), Passer domesticus, Struthiomimus altus(an ornithomimid), Microraptor gui(a winged dromaeosaurid).
Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
Clade:	Avetheropoda
Clade:	Coelurosauria von Huene, 1914
Subgroups
†Aniksosaurus †Bagaraatan †Bicentenaria †Lourinhanosaurus? †Phaedrolosaurus †Richardoestesia †Sciurumimus? †Teinurosaurus †Tugulusaurus †Xinjiangovenator †Zuolong? †Megaraptora? Tyrannoraptora Sereno, 1999 †Aorun †Compsognathidae (possibly polyphyletic) †Tanycolagreus †Tyrannosauroidea Maniraptoromorpha Cau, 2018 †Coelurus? †Ornitholestes Maniraptoriformes

Coelurosauria is the clade containing all theropod dinosaurs more closely related to birds than to carnosaurs.

This is a varied group that includes tyrannosaurs, ornithomimosaurs, compsognathids and maniraptors; Maniraptora includes birds, the only descendents of coelurosaurs alive today.

All Paraves discovered so far have been coelurosaurs. It is probable that all coelurosaurs were feathered.

Some diagnostic characteristics of coelurosaurs include elongated arms and well-developed hinge-like ankles (possible rotation of the ankle is reduced, which is helpful during locomotion). These features may be lost or modified by later coelurosaurs (birds, for example).