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Psittacosaurus mongoliensis Osborn 1923 (ornithischian)

Reptilia - Neornithischia - Psittacosauridae

PaleoDB taxon number: 52831

Synonyms: Protiguanodon mongoliense Osborn 1923 (no. 56330), Psittacosaurus guyangensis Cheng 1982 (no. 65683), Psittacosaurus osborni Young 1932 (no. 65706), Psittacosaurus protiguanodonensis Young 1958 (no. 68261), Psittacosaurus tingi Young 1932 (no. 65945)

Full reference: H. F. Osborn. 1923. Two Lower Cretaceous dinosaurs of Mongolia. American Museum Novitates 95:1-10

Belongs to Psittacosaurus according to P. C. Sereno 2010

Sister taxa: Psittacosaurus gobiensis, Psittacosaurus houi, Psittacosaurus lujiatunensis, Psittacosaurus major, Psittacosaurus mazongshanensis, Psittacosaurus meileyingensis, Psittacosaurus neimongoliensis, Psittacosaurus ordosensis, Psittacosaurus sibiricus, Psittacosaurus sinensis, Psittacosaurus xinjiangensis

Type specimens:

  • Psittacosaurus mongoliensis: AMNH 6254, a skeleton. Its type locality is Red Mesa, Artsa Bogdo (AMNH Loc. 11494), which is in a Cretaceous terrestrial horizon in the Öösh Formation of Mongolia.
  • Protiguanodon mongoliense: AMNH 6253. Its type locality is Mt. Uskuk, Tsagan Nor (AMNH 10514), which is in a Cretaceous terrestrial horizon in the Öösh Formation of Mongolia.
  • Psittacosaurus guyangensis: IVPP V.351, 352, a partial skeleton. Its type locality is Guyang Basin dinosaur site, which is in a Cretaceous terrestrial siltstone/conglomerate in the Lisangou Formation of China.
  • Psittacosaurus osborni: IVPP V41039, a partial skull. Its type locality is Tebch (SSE), which is in an Aptian terrestrial sandstone in China.
  • Psittacosaurus protiguanodonensis:
  • Psittacosaurus tingi: IVPP V31040, a partial skull. Its type locality is Tebch (SSE), which is in an Aptian terrestrial sandstone in China.

Ecology: ground dwelling herbivore

Average measurements (in mm): femur length 160.0, fibula length 172.9, humerus length 121.0, radius length 81.0, scapula length 148.0, skull length 150.0, tibia length 181.0, ulna length 90.0

Estimated body mass: 11.5 kg based on femur length