Oviraptorosauria
Saurischia Theropoda Tetanurae Coelurosauria Oviraptorosauria [Carnivore]
Barsbold, 1975a, Diagnosis: Small and moderately large theropods with toothless jaws which formed a massive beak. Dental bone has two processes, separated by large lateral openings. The articular joint of the lower jaw has a massive longitudinal projection. Composition: Family Oviraptoridae Barsbold, 1976; and Caenagnathidae Sternberg, 1940. Comparison: Oviraptorosaurs are the second group of toothless theropods, basically differentiated from ornithomimosaurs by the development of a massive beak and the highly specific in configuration and structure of the lower jaw with the characteristic articular joint. Distribution: Late Cretaceous, Central Asia.
A group of toothless carnivorous dinosaurs from the Late Cretaceous period, mostly small sized with lightly built skeletons that display most common theropod characters.
Cretaceous Early
China
Incisivosaurus gautheri - Yixian Formation, Liaoning
Cretaceous Late
Canada
Caenagnathus
Caenagnathus collinsi - Judith River Group (Wedge), Alberta
Caenagnathus sternbergi - Judith River Group (Wedge), Alberta
Chirostenotes
Chirostenotes elegans - Oldman Formation, Judith River Group (Wedge), Alberta
Elmisaurus elegans - Judith River Group (Wedge), Alberta
Ornithomimus elegans - Oldman Formation, Judith River Group (Wedge), Alberta
Chirostenotes pergracilis - Judith River Group (Wedge), Horseshoe Canyon Formation, Alberta
Macrophalangia canadensis - Judith River Group (Wedge), Alberta
Epichirostenotes curriei - Horseshoe Canyon Formation, Alberta
US
Caenagnathus
Caenagnathus sternbergi - Two Medicine Formation, Montana
Hagryphus giganteus - Kaiparowits Formation, Utah
Ojoraptorsaurus boerei - Ojo Alamo Sandstone, New Mexico
China
Avimimus portentosus - Iren Dabasu Formation
Banji long - Nanxiong Formation
Gigantoraptor erlianensis - Iren Dabasu Formation
Luoyanggia liudianensis - Mangchuan Formation
Machairasaurus leptonychus - Wulansuhai Formation
Shixinggia oblita - Pingling Formation
Kazakhstan
Caenagnathasia martinsoni - Bostobinskaya Svita
Mongolia
Avimimus portentosus - Barun Goyot Formation
Citipati
Citipati osmolskae - Djadochta Formation, Ukhaa Tolgod
Citipati sp. - Djadochta Formation, Ukhaa Tolgod
Conchoraptor gracilis - Barun Goyot Formation, Red Beds of Khermeen Tsav
Elmisaurus rarus - Nemegt Formation
Heyuannia huangi - Dalangshan Formation
Ingenia yanshini (1) - Barun Goyot Formation, Red Beds of Khermeen Tsav, [Hermiin Tsav], Nemegt Formation
Ingenia yanshini (2) - Red Beds of Khermeen Tsav
Khaan mckennai - Djadochta Formation
Nemegtomaia barsboldi - Nemegt Formation
Nemegtia barsboldi
Nomingia gobiensis - Bugin Tsav
Oviraptor philoceratops - Djadochta Formation
Rinchenia mongoliensis - Nemegt Formation
Oviraptor mongoliensis - Nemegt Formation
Uzbekistan
Caenagnathasia martinsoni - Bissekt Formation