TYPE SPECIES:
• C. pergracilis Gilmore, 1924
  OTHER SPECIES:
• C. sp.
• C. sternbergi (Cracraft, 1971) (originally Caenagnathus) "Charles M. Sternberg's slender hand"
  
  MISASSIGNED SPECIES:
• C. elegans (originally Ornithomimus) = Elmisaurus elegans
• C. rarus (Osmólska, 1981) (originally Elmisaurus) = Elmisaurus rarus

Animalia
Vertebrata
Tetrapoda
Sauropsida
Archosauromorpha
Ornithodira
Dinosauria
Theropoda
Tetanurae
Coelurosauria
Oviraptorosauria

• C. pergracilis: 2 m
• C. sternbergi: 1.7 m

• C. pergracilis: ?20 kg
• C. sternbergi: ?50 kg

Chirostenotes sternbergi may be the same as C. pergracilis, perhaps a different gender. Some material may belong to a new species.

I.    Chirostenotes sternbergi (based on Chirostenotes pergracilis) 
II.   Chirostenotes pergracilis
III.  Chirostenotes sp. (based on Chirostenotes pergracilis) 
IV.   Elmisaurus rarus (based on other Caenagnathidae) 
V.    Nomingia gobiensis (based on other Oviraptorosauria) 
VI.   Caenagnathasia martinsoni
VII.  Elmisaurus elegans (based on other Caenagnathidae)
VIII. Ingenia yanshini
IX.   Ingenia yanshini morph
      (possibly a different age, sex, species or subspecies from type) 
X.    Conchoraptor gracilis
XI.   Oviraptor philoceratops
XII.  Oviraptor philoceratops morph AMNH 6517 
      (possibly a different age, sex, species or subspecies from type) 
XIII. Oviraptor philoceratops morph
      (possibly a different age, sex, species or subspecies from type) 
XIV.  Rinchenia mongoliensis