Articles

 

Boletín de la Sociedad Geológica Mexicana

Volumen 70, núm. 2, 2018, p. 449 ‒ 497
http://dx.doi.org/10.18268/BSGM2018v70n2a11

Huellas de dinosaurios en la costa oeste del embalse Ezequiel Ramos Mexía y alrededores (Cretácico Superior, Provincia de Neuquén, República Argentina)

Jorge Orlando Calvo1,2,*, Cynthia Rivera3

1 Grupo de Transferencia Proyecto Dino, Ruta 51, km 65, Universidad Nacional del Comahue, Facultad de Ingeniería, Departamento de Geología, Bs. As. 1400, (8300). Neuquén, Argentina.
2 Universidad Nacional de la Pampa, Facultad de Ciencias Exactas y Naturales, Santa Rosa, Av. Uruguay 151 (6300). La Pampa, Argentina.
3 Grupo de Transferencia Proyecto Dino, Ruta 51, km 65, Universidad Nacional del Comahue, Facultad de Ingeniería, Bs. As. 1400, (8300). Neuquén, Argentina.

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Abstract

In Argentina, some of the most important dinosaur tracksites are found on the west coast of the Ezequiel Ramos Mexía reservoir, in the Neuquén province. In the last 30 years, more than 100 km of coastline have yielded hundreds of dinosaur tracks. The tracks are part of the Albian?-lower Cenomanian Candeleros Formation, Neuquén Group. An extensive study and review of the dinosaur tracks described in the past 30 years is reinterpreted and revised. Candeleroichnuscanalei ichnogen. nov. ichnosp. nov. is described. A neotype is chosen for Deferrariischniummapuchensis Calvo, 1991 and an emended diagnosis improves the ichnospecies. In addition, new information of the trackway diagnosis of Picunichnusbenedettoi Calvo, 1991, such as length of pace and pace angle is given. We analyze all the dinosaur sites discovered until now and we identify all described ichnoforms such as Sousaichniummonettae, Limayichnusmajor, Abelichnusastigarrae and Sauropodichnusgiganteus. We include unpublished figures, photos and tables of the ichnotypes.

Keywords: Tracks, Dinosauria, Theropoda, Sauropoda, Patagonia, Cretaceous.