Piatnitzkysaurus: Difference between revisions
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|binomial_authority = [[Jose Bonaparte|Bonaparte]], 1979 |
|binomial_authority = [[Jose Bonaparte|Bonaparte]], 1979 |
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'''''Piatnitzkysaurus''''' (named to honor Alejandro Mateievich Piatnitzky (1879-1959), Russian-born Argentine geologist) is a [[genus]] of [[theropod]] [[dinosaur]]. It is known from the [[Canadon Asfalto Formation]], [[Middle Jurassic]] ([[Callovian]] stage) of what is now [[Argentina]]. Once thought to be a [[basal (phylogenetics)|basal]] [[carnosaur]], it may instead be a [[megalosauroidea|megalosauroid]].<ref name=benson2010/> Partial skeletons are known (two fractured skulls and parts of the [[postcrania]]l skeleton) and show ''Piatnitzkysaurus'' was a lightly built medium-sized bipedal carnivore with robust arms around {{convert|4.3|m|ft}} long and around {{convert|450|kg|lb}} in mass, though such estimates apply on the [[holotype]], which is a [[subadult]].<ref>Mazzetta, G. V., Fariiia, R. A., & Vizcaino, S. F. 2000. On the palaeobiology of the South American homed theropod Carnotaurus sastrei Bonaparte. In: B. Perez-Moreno, T.R. Holtz Jr., J.L. Sanz, & J.J. Moratalla (eds.), Aspects of Theropod Paleobiology, Special Volume - Gaia 15, 185-192. Lisbon.</ref> Its [[ischium]] is {{convert|423|mm|in}} long.<ref>Brusatte, S. L., Benson, R. B. J., and Xu, X. 2010. The evolution of large-bodied theropod dinosaurs during the Mesozoic in Asia. Journal of Iberian Geology, 36, 275-296</ref> |
'''''Piatnitzkysaurus''''' (named to honor Alejandro Mateievich Piatnitzky (1879-1959), Russian-born Argentine geologist) is a [[genus]] of [[theropod]] [[dinosaur]]. It is known from the [[Canadon Asfalto Formation]], [[Middle Jurassic]] ([[Callovian]] stage) of what is now [[Argentina]]. Once thought to be a [[basal (phylogenetics)|basal]] [[carnosaur]]<ref>Bonaparte, 1979. Dinosaurs: A Jurassic assembalge from Patagonia. Science. 205, 1377-1379 |
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</ref>, it may instead be a [[megalosauroidea|megalosauroid]].<ref name=benson2010/> Partial skeletons are known (two fractured skulls and parts of the [[postcrania]]l skeleton) and show ''Piatnitzkysaurus'' was a lightly built medium-sized bipedal carnivore with robust arms around {{convert|4.3|m|ft}} long and around {{convert|450|kg|lb}} in mass, though such estimates apply on the [[holotype]], which is a [[subadult]].<ref>Mazzetta, G. V., Fariiia, R. A., & Vizcaino, S. F. 2000. On the palaeobiology of the South American homed theropod Carnotaurus sastrei Bonaparte. In: B. Perez-Moreno, T.R. Holtz Jr., J.L. Sanz, & J.J. Moratalla (eds.), Aspects of Theropod Paleobiology, Special Volume - Gaia 15, 185-192. Lisbon.</ref> Its [[ischium]] is {{convert|423|mm|in}} long.<ref>Brusatte, S. L., Benson, R. B. J., and Xu, X. 2010. The evolution of large-bodied theropod dinosaurs during the Mesozoic in Asia. Journal of Iberian Geology, 36, 275-296</ref> |
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[[File:Piatnitzkysaurus skull 1.jpg|thumb|left|''Piatnitzkysaurus'' skull.]] |
[[File:Piatnitzkysaurus skull 1.jpg|thumb|left|''Piatnitzkysaurus'' skull.]] |
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[[File:Piatnitzkysaurus.jpg|thumb|left|''Piatnitzkysaurus'' skeleton cast in Argentina]] |
[[File:Piatnitzkysaurus.jpg|thumb|left|''Piatnitzkysaurus'' skeleton cast in Argentina]] |
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Revision as of 15:54, 5 November 2010
| Piatnitzkysaurus Temporal range: Middle Jurassic
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| Genus: | Piatnitzkysaurus
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| Species: | P. floresi
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| Binomial name | |
| Piatnitzkysaurus floresi Bonaparte, 1979
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Piatnitzkysaurus (named to honor Alejandro Mateievich Piatnitzky (1879-1959), Russian-born Argentine geologist) is a genus of theropod dinosaur. It is known from the Canadon Asfalto Formation, Middle Jurassic (Callovian stage) of what is now Argentina. Once thought to be a basal carnosaur[2], it may instead be a megalosauroid.[1] Partial skeletons are known (two fractured skulls and parts of the postcranial skeleton) and show Piatnitzkysaurus was a lightly built medium-sized bipedal carnivore with robust arms around 4.3 metres (14 ft) long and around 450 kilograms (990 lb) in mass, though such estimates apply on the holotype, which is a subadult.[3] Its ischium is 423 millimetres (16.7 in) long.[4]
The type species, Piatnitzkysaurus floresi, was described by Jose Bonaparte in 1979.
References
- ^ a b Benson, R.B.J. (2010). "A description of Megalosaurus bucklandii (Dinosauria: Theropoda) from the Bathonian of the UK and the relationships of Middle Jurassic theropods". Zoological Journal of the Linnean Society. doi:10.1111/j.1096-3642.2009.00569.x.
- ^ Bonaparte, 1979. Dinosaurs: A Jurassic assembalge from Patagonia. Science. 205, 1377-1379
- ^ Mazzetta, G. V., Fariiia, R. A., & Vizcaino, S. F. 2000. On the palaeobiology of the South American homed theropod Carnotaurus sastrei Bonaparte. In: B. Perez-Moreno, T.R. Holtz Jr., J.L. Sanz, & J.J. Moratalla (eds.), Aspects of Theropod Paleobiology, Special Volume - Gaia 15, 185-192. Lisbon.
- ^ Brusatte, S. L., Benson, R. B. J., and Xu, X. 2010. The evolution of large-bodied theropod dinosaurs during the Mesozoic in Asia. Journal of Iberian Geology, 36, 275-296
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