Vertebrate tracks from the Paso Córdoba fossiliferous site (Anacleto and Allen formations, Upper Cretaceous), Northern Patagonia, Argentina: Preservational, environmental and palaeobiological implications

dc.creatorDíaz Martínez, Ignacio
dc.creatorCónsole Gonella, Carlos
dc.creatorde Valais, Silvina
dc.creatorSalgado, Leonardo
dc.date2018-03
dc.date.accessioned2023-08-30T16:40:34Z
dc.date.available2023-08-30T16:40:34Z
dc.identifierDíaz-Martínez, I., Cónsole-Gonella, C., de Valais, S., & Salgado, L. (2018). Vertebrate tracks from the Paso Córdoba fossiliferous site (Anacleto and Allen formations, Upper Cretaceous), Northern Patagonia, Argentina: Preservational, environmental and palaeobiological implications. Cretaceous Research, 83, 207-220.
dc.identifier0195-6671
dc.identifierhttps://www.sciencedirect.com/science/article/pii/S0195667117301544
dc.identifierhttps://rid.unrn.edu.ar/jspui/handle/20.500.12049/2844
dc.identifierhttps://doi.org/10.1016/j.cretres.2017.07.008
dc.identifier.urihttps://repositorioslatinoamericanos.uchile.cl/handle/2250/8534993
dc.descriptionFil: Díaz Martínez, Ignacio. CONICET, Argentina.
dc.descriptionFil: Díaz Martínez, Ignacio. Universidad Nacional de Río Negro, Sede Alto Valle; Argentina.
dc.descriptionFil: Díaz Martínez, Ignacio. Instituto en Investigación en Paleobiología y Geología; Argentina.
dc.descriptionFil: Cónsole Gonella, Carlos. Universidad Nacional de Tucumán; Argentina.
dc.descriptionFil: Cónsole Gonella, Carlos. CONICET, Argentina.
dc.descriptionFil: Cónsole Gonella, Carlos. Instituto Superior de Correlación Geológica, Argentina.
dc.descriptionFil: de Valais, Silvina. CONICET, Argentina.
dc.descriptionFil: de Valais, Silvina. Universidad Nacional de Río Negro, Sede Alto Valle, Argentina.
dc.descriptionFil: de Valais, Silvina. Instituto en Investigación en Paleobiología y Geología, Argentina.
dc.descriptionFil: Salgado, Leonardo. CONICET, Argentina.
dc.descriptionFil: Salgado, Leonardo. Universidad Nacional de Río Negro, Sede Alto Valle, Argentina.
dc.descriptionFil: Salgado, Leonardo. Instituto en Investigación en Paleobiología y Geología, Argentina.
dc.descriptionThe Paso Córdoba fossiliferous site (Río Negro, Northern Patagonia) is one of the first Mesozoic fossiliferous localities studied in Argentina. There, turtle, crocodile and dinosaur remains as well as dinosaur and bird tracks have been recorded. Recently, a new locality with vertebrate tracks, the Cañadón del Desvío, has been discovered in Paso Córdoba. Six track-bearing layers were located in outcrops belonging to the Anacleto (lower to middle Campanian, Neuquén Group) and Allen (middle Campanian-lower Maastrichtian, Malargüe Group) formations. The Cañadón del Desvío locality reveals that vertebrate trace fossils are distributed in two distinct environments, floodplains of a meandering fluvial to shallow lacustrine system and a wet interdune deposit that is associated to an aeolian setting. Also, in the logged section several soft sediment deformation structures were found. In regard of this, a sedimentary facies analysis is provided in order to assess the palaeoenvironmental implications of this new record. The analysed tracks are preserved in cross-sections, on bedding-planes and as natural casts. When it is possible, the tracking surface, true tracks, undertracks and overtracks/natural casts have been identified and the track preservation and the formation history of the tracksite are discussed. Only two tracks preserve enough anatomical details to relate them with their trackmakers, in this case hadrosaurid dinosaurs. The stratigraphical, facial and palaeoenvironmental data of this study support the idea of a transitional passage between the Anacleto and Allen Formation in Paso Córdoba. The presence of hadrosaurid dinosaur tracks suggests that the upper part of the log, where this kind of tracks were found, likely belong to Allen Formation due to this dinosaurs appear in the Southern Hemisphere in this epoch. The sum of osteological and ichnological remains improve the Paso Córdoba palaeofaunistic knowledge. The presence of six different levels in which the trackmakers walked reflects the abundance of vertebrates in the transition between Anacleto and Allen formations.
dc.descriptiontrue
dc.descriptionThe Paso Córdoba fossiliferous site (Río Negro, Northern Patagonia) is one of the first Mesozoic fossiliferous localities studied in Argentina. There, turtle, crocodile and dinosaur remains as well as dinosaur and bird tracks have been recorded. Recently, a new locality with vertebrate tracks, the Cañadón del Desvío, has been discovered in Paso Córdoba. Six track-bearing layers were located in outcrops belonging to the Anacleto (lower to middle Campanian, Neuquén Group) and Allen (middle Campanian-lower Maastrichtian, Malargüe Group) formations. The Cañadón del Desvío locality reveals that vertebrate trace fossils are distributed in two distinct environments, floodplains of a meandering fluvial to shallow lacustrine system and a wet interdune deposit that is associated to an aeolian setting. Also, in the logged section several soft sediment deformation structures were found. In regard of this, a sedimentary facies analysis is provided in order to assess the palaeoenvironmental implications of this new record. The analysed tracks are preserved in cross-sections, on bedding-planes and as natural casts. When it is possible, the tracking surface, true tracks, undertracks and overtracks/natural casts have been identified and the track preservation and the formation history of the tracksite are discussed. Only two tracks preserve enough anatomical details to relate them with their trackmakers, in this case hadrosaurid dinosaurs. The stratigraphical, facial and palaeoenvironmental data of this study support the idea of a transitional passage between the Anacleto and Allen Formation in Paso Córdoba. The presence of hadrosaurid dinosaur tracks suggests that the upper part of the log, where this kind of tracks were found, likely belong to Allen Formation due to this dinosaurs appear in the Southern Hemisphere in this epoch. The sum of osteological and ichnological remains improve the Paso Córdoba palaeofaunistic knowledge. The presence of six different levels in which the trackmakers walked reflects the abundance of vertebrates in the transition between Anacleto and Allen formations.
dc.formatapplication/pdf
dc.languageen
dc.publisherElsevier
dc.relation83
dc.relationCretaceous Research
dc.rightsinfo:eu-repo/semantics/restrictedAccess
dc.rightshttps://creativecommons.org/licenses/by-nc-sa/4.0/
dc.subjectPaleontología
dc.subjectVertebrate ichnology
dc.subjectSedimentary structures
dc.subjectPalaeodiversity
dc.subjectCampanian-Maastrichtian
dc.subjectArgentina
dc.subjectPaleontología
dc.titleVertebrate tracks from the Paso Córdoba fossiliferous site (Anacleto and Allen formations, Upper Cretaceous), Northern Patagonia, Argentina: Preservational, environmental and palaeobiological implications


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