Biology:Aoniraptor
Aoniraptor is an extinct genus of megaraptoran theropod dinosaurs from the Late Cretaceous Huincul Formation of Argentina. The genus contains a single species, Aoniraptor libertatem, known from a partial skeleton.
Discovery and naming
The holotype, MPCA-Pv 804/1 to 804/25, which consists of the last sacral vertebra, six proximal caudal vertebrae, four mid-caudal vertebrae, and five haemal arches, 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 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.[1]
Description
Aoniraptor grew up to 6 metres (20 ft) long.[1]
On some blogs, Aoniraptor has been informally considered as synonymous with the theropod Gualicho, described from the same formation, due to the similarities of their caudal vertebrae. If this were supported, the name Gualicho would have precedent.[2][3] Aranciaga Rolando et al. in 2020 performed a comparative analysis between the pneumatic structures of Aoniraptor and Gualicho, and found many differences between the two.[4]
Classification
Phylogenetic analyses including Aoniraptor recover it as a megaraptoran.[1][4] The results of the phylogenetic analysis of Rolando et al. (2022) are displayed in the cladogram below:[5]
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See also
- 2016 in archosaur paleontology
References
- ↑ 1.0 1.1 1.2 1.3 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. https://www.researchgate.net/publication/304013683.
- ↑ Mortimer, Mickey (2016-07-13). "Is Gualicho Aoniraptor?". http://theropoddatabase.blogspot.com/2016/07/is-gualicho-aoniraptor.html.
- ↑ Cau, Andrea. "Nuovi resti di Aoniraptor? Ehm... Benvenuto Gualicho!". http://theropoda.blogspot.com/2016/07/nuovi-resti-di-aoniraptor-ehm-benvenuto.html.
- ↑ 4.0 4.1 Rolando, Mauro Aranciaga; Marsà, Jordi Garcia; Novas, Fernando (2020). "Histology and pneumaticity of Aoniraptor libertatem (Dinosauria, Theropoda), an enigmatic mid-sized megaraptoran from Patagonia" (in en). Journal of Anatomy 237 (4): 741–756. doi:10.1111/joa.13225. ISSN 1469-7580. PMID 32470191.
- ↑ Rolando, Alexis M. A.; Motta, Matias J.; Agnolín, Federico L.; Manabe, Makoto; Tsuihiji, Takanobu; Novas, Fernando E. (April 26, 2022). "A large Megaraptoridae (Theropoda: Coelurosauria) from Upper Cretaceous (Maastrichtian) of Patagonia, Argentina". Scientific Reports 12 (1). doi:10.1038/s41598-022-09272-z. PMID 35474310. Bibcode: 2022NatSR..12.6318A.
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Wikidata ☰ Q24705122 entry
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