After Clark, Norell & Rowe, 2002, Marya´nska, Osmólska & Wolsan, 2002, and Lü et al., 2004
<==o †Oviraptorosauria Barsbold, 1976b |?- †Omnivoropteryx sinousaorum Czerkas & Qiang Ji, 2002; L.Cret. EAs. |-- †Incisivosaurus gauthieri Xu, Cheng, Wang & Chang, 2002 [=? Protarchaeopteryx robusta Ji & Ji, 1997] [Incisivosaurus guuthieri Lü et al., 2004 (lapsus calami)] `--+-- †Avimimus portentosus Kurzanov, 1981 [Avimimidae Kurzanov, 1981] `--+--o †Caudipteryx Ji, Currie, Norell & Ji, 1998 [Caudipterygidae] [feathered] | |-- †C. dongi Zhou & Wang, 2000 | `-- †C. zoui Ji, Currie, Norell & Ji, 1998 |?- †Hagryphus giganteus Zanno & Sampson, 2005; U.Cret. WNAm. |?- †Shixinggia oblita Lu & Zhang, 2005 `--o †Oviraptoroidea Barsbold, 1976a sensu Marya´nska, Osmólska & Wolsan, 2002 |--o †Caenagnathidae Sternberg, R. M., 1940 [incl. Elmisauridae Osmólska, 1981] | |?- †Caenagnathasia martinsoni Currie, Godfrey & Nessov, 1995 | `--o †Caenagnathinae Sternberg, R. M., 1940 | |?- †Ricardoestesia gilmorei Currie, Rigby & Sloan, 1990 | |?- †Nomingia gobiensis Barsbold, Osmólska, Watabe, Currie & Tsogtbataar, 2000 | `--o †Chirostenotes Gilmore, 1924a [Elmisaurus Osmólska, 1981, Caenagnathus Sternberg, R. M., 1940, Macrophalangia Sternberg, 1932a] | |-- †C. pergracilis Gilmore, 1924a [Macrophalangia canadiensis Sternberg, 1932a, Caenagnathus collinsi Sternberg, R. M., 1940] | |-- †C. elegans (Parks, 1933) [Elmisaurus elegans (Parks, 1933), Ornithomimus elegans Parks, 1933, Caenagnathus sternbergi Cracraft, 1971] | `-- †C. rarus (Osmólska, 1981) [Elmisaurus rarus Osmólska, 1981] `--o †Oviraptoridae Barsbold, 1976a sensu Lü et al., 2004 |-- †Gigantoraptor erlianensis Xu, Q. Tan, Wang, Zhao & L. Tan, 2007 |-- †Khaan mckennai Clark, Norell & Barsbold, 2001 `--+--+-- †Oviratoridae gen. et sp. indet. [GIN 100/42] [Oviraptor philoceratops Osborn; Barsbold et al., 1990] | `-- †Oviraptor philoceratops Osborn, 1924a `--+--+-- †Heyuannia huangi Lü, 2003 | `--+-- †Nemegtomaia barsboldi (Lü, Tomida, Azuma, Dong & Lee, 2004) Lü, Tomida, Azuma, Dong & Lee, 2005 [Nemegtia barsboldi Lü, Tomida, Azuma, Dong & Lee, 2004 (preoccupied by an ostracod)] | `-- †Citipati osmolskae Clark, Norell & Barsbold, 2001 `--o ?†Ingeniinae Barsbold, 1981 |-- †Conchoraptor gracilis Barsbold, 1986 [incl. Ingenia yanshini Barsbold, 1981 in partim] `--+-- †Ingenia yanshini Barsbold, 1981 `--+-- †Rinchenia mongoliensis (Barsbold, 1986) Barsbold, 1997 ["Oviraptor" mongoliensis Barsbold, 1986] `-- †Nomingia gobiensis Barsbold, Osmólska, Watabe, Currie & Tsogtbataar, 2000
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