Caenagnathidae

Caenagnathids Temporal range: Early-Late Cretaceous, 110–66 Ma PreꞒ Ꞓ O S D C P T J K Pg N
Reconstructed skull of Anzu wyliei
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Clade:	Dinosauria
Clade:	Saurischia
Clade:	Theropoda
Superfamily:	†Caenagnathoidea
Family:	†Caenagnathidae Sternberg, 1940
Type species
†Caenagnathus collinsi Sternberg, 1940
Genera
†Anomalipes †Beibeilong †Chirostenotes †Eoneophron[1] †Gigantoraptor †Hagryphus †Leptorhynchos †Microvenator †Nomingia †Ojoraptorsaurus †Caenagnathinae †Apatoraptor †Anzu †Caenagnathasia †Caenagnathus †Epichirostenotes †Elmisaurinae †Citipes †Elmisaurus
Synonyms
Elmisauridae Osmólska, 1981

Caenagnathidae is a family of derived caenagnathoid dinosaurs from the Cretaceous of North America and Asia. They are a member of the Oviraptorosauria, and relatives of the Oviraptoridae.^[2] Like other oviraptorosaurs, caenagnathids had specialized beaks,^[3] long necks,^[4] and short tails,^[5] and would have been covered in feathers. The relationships of caenagnathids were long a puzzle. The family was originally named by Raymond Martin Sternberg in 1940 ^[6] as a family of flightless birds. The discovery of skeletons of the related oviraptorids revealed that they were in fact non-avian theropods,^[7] and the discovery of more complete caenagnathid remains ^[4][8] revealed that Chirostenotes pergracilis, originally named on the basis of a pair of hands, and Citipes elegans, originally thought to be an ornithomimid, named from a foot, were caenagnathids as well.