Temporal range: late Cenomanian-early Turonian
~96–91 Ma
Scientific classification edit
Kingdom: Animalia
Phylum: Chordata
Clade: Dinosauria
Clade: Saurischia
Clade: Theropoda
Clade: Megaraptora
Genus: Aoniraptor
Motta et al., 2016
A. libertatem
Binomial name
Aoniraptor libertatem
Motta et al., 2016

Aoniraptor is a megaraptoran theropod from the Late Cretaceous of Argentina. It was recovered by Matias Motta from the Violante Farm, part of the Huincul Formation. It was discovered in 2010, but only formally described in 2016.[1] Aoniraptor has been considered as synonymous with the theropod Gualicho, described from the same formation, due to the similarities of their caudal vertebrae.[2][3]

Aranciaga Rolando et al. in 2020 performed a comparative analysis between Aoniraptor and Gualicho.[4]


Aoniraptor comes from the Tehuelche language word "Aoni", which means south, and the Latin word "raptor", meaning thief. The specific name, libertatem, comes from the Latin word for freedom, as it was discovered on the bicentennial of Argentina's independence from Spain in 1810.

See also


  1. ^ Motta, Matías J.; Aranciaga Rolando, Alexis M.; Rozadilla, Sebastián; Agnolín, Federico E.; Chimento, Nicolás R.; Egli, Federico Brissón; Novas, Fernando E. (June 2016). "New theropod fauna from the Upper Cretaceous (Huincul Formation) of northwestern Patagonia, Argentina". New Mexico Museum of Natural History and Science Bulletin. 71: 231–253 – via ResearchGate.
  2. ^ Mortimer, Mickey (2016-07-13). "Is Gualicho Aoniraptor?". The Theropod Database Blog. Retrieved July 14, 2016.
  3. ^ Cau, Andrea. "Nuovi resti di Aoniraptor? Ehm... Benvenuto Gualicho!". Theropoda. Retrieved July 14, 2016.
  4. ^ Aranciaga Rolando et al., 2020


  • Aranciaga Rolando, Mauro; Jordi Garcia Marsà, and Fernando Novas. 2020. Histology and pneumaticity of Aoniraptor libertatem (Dinosauria, Theropoda), an enigmatic mid‐sized megaraptoran from Patagonia. Journal of Anatomy 237. 741–756. Accessed 2020-09-22.