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Pterosaur tibiotarsus from Jurassic Vaca Muerta Formation, Argentina.



From: Ben Creisler
bcreisler@gmail.com


A new online paper:

Laura Codorniú & Alberto Garrido (2013)
New fossil record of a Jurassic pterosaur tibiotarsus from Neuquen
Basin, Vaca Muerta Formation, Argentina.
Journal of South American Earth Sciences (advance online publication)
doi: http://dx.doi.org/10.1016/j.jsames.2013.09.010
http://www.sciencedirect.com/science/article/pii/S0895981113001417




Discoveries of Jurassic pterosaurs in the Southern Hemisphere are
extremely unusual. In Argentina, pterosaurs from the Upper Jurassic
(Tithonian) have only been found in the Northwest of Patagonia
(Neuquén Basin). These come from marine deposits and three specimens
have been discovered up to the present. In this paper, we report a new
finding from the Neuquén Basin. This material is identified as a
tibiotarsus, which probably belonged to an osteologically adult
individual and represents a new species of a pterodactyloid pterosaur
of medium size. This discovery provides new evidence that at least two
different species of pterodactyloid pterosaurs may have coexisted in
the shallow marine deposits of the Neuquén Basin.