(Nei Mongol lizard).
Named By: X.-H. Zhang, X. Xu, X.-J. Zhao, P. C. Sereno, X.-W. Kuang & L. Tan - 2001.
Classification: Chordata, Reptilia, Dinosauria, Saurischia, Theropoda, Therizinosauroidea.
Species: N. yangi (type).
Size: About 2.3 meters long.
Known locations: China - Iren Dabasu Formation. Kazakstan - Bostobe Formation.
Time period: Santonian to Campanian of the Cretaceous.
Fossil representation: Partial post cranial skeleton as well as partial skull/jaw fragments.
Neimongosaurus is a genus of therizinosaur that lived in Asia during the late Cretaceous. Like other therizinosaurs, Neimongosaurus was descended from meat eating theropods, though the teeth in the lower jaw of Neimongosaurus which have coarse serrations which indicate that Neimongosaurus were plant eaters. Neimongosaurus has occasionally been classed as a member of the Therizinosauridae, though the original idea as well as later interpretations of Neimongosaurus is that it actually belongs in the Therizinosauroidea, meaning that it was more primitive in form.
- A long-necked therizinosauroid dinosaur from the Upper Cretaceous Iren Dabasu Formation of Nei Mongol, People's Republic of China. - Vertebrata PalAsiatica 39(4):282-290. - X.-H. Zhang, X. Xu, X.-J. Zhao, P. C. Sereno, X.-W. Kuang & L. Tan - 2001.
- The range of motion of the glenohumeral joint of the therizinosaur Neimongosaurus yangi (Dinosauria: Theropoda). - Journal of Vertebrate Paleontology. 26 (supp. 3): 46A. - S. H. Burch - 2006.
- A taxonomic and phylogenetic re-evaluation of Therizinosauria (Dinosauria: Maniraptora). - Journal of Systematic Palaeontology 8 (4): 503–543. - Lindsay E. Zanno - 2010.