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[dinosaur] Dinosaur tracks in Kokorkom Desert in Argentina




Ben Creisler
bcreisler@gmail.com


A new paper:


David Javier Candia Halupczok, Maria Lidia SÃnchez, Gonzalo Diego Veiga & SebastiÃn ApesteguÃa (2017)
Dinosaur tracks in the Kokorkom Desert, Candeleros Formation (Cenomanian, Upper Cretaceous), Patagonia Argentina: Implications for deformation structures in dune fields.
Cretaceous Research (advance online publication)
doi: https://doi.org/10.1016/j.cretres.2017.10.017
http://www.sciencedirect.com/science/article/pii/S0195667117302215

Highlights
Deformation structures have been identified and interpreted as tracks.
Tracks are found in different sedimentary rocks associations.
Tracks could be interpreted as theropod dinosaurs.
Abstract
The Kokorkom desert extended over an area of 826 km2 in the central-west sector of NeuquÃn and RÃo Negro provinces along the area of the backbulge basin within the Andean Foreland basin in the NeuquÃn Basin. Its deposits constitute the middle-upper section of the Candeleros Formation (Cenomanian) and reach approximately 130 m thick. Tracks are found on wet and dry interdune and within draa slipface deposits. They constitute biogenic deformation structures characterized by folded-up and/or brecciated sandstone levels formed under dry and/or wet substrate conditions with passive filling. The degree of preservation varies, but the identification of digit impression suggests that they were produced by theropods or iguanodontians.
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