Skip navigation
Por favor, use este identificador para citar o enlazar este ítem:

Registro completo de metadatos
Campo DC Valor Lengua/Idioma
dc.contributor.authorMoreno, Karen-
dc.contributor.authorde Valais, Silvina-
dc.contributor.authorBlanco, Nicolás-
dc.contributor.authorTomlinson, Andrew-
dc.contributor.authorJacay, Javier-
dc.contributor.authorCalvo, Jorge O.-
dc.identifier.citationMoreno, K., De Valais, S., Blanco, N., Tomlinson, A.J., Jacay, J., and Calvo, J.O. (2012). Large theropod dinosaur footprint associations in western Gondwana: Behavioural and palaeogeographic implications. Acta Palaeontologica Polonica; 57 (1); 73–83.es_ES
dc.description.abstractIn modern terrestrial ecosystems, the population size of large predators is low, and a similar pattern has usually been assumed for dinosaurs. However, fossil finds of monospecific, large theropod accumulations suggest that population dynamics were more complex. Here, we report two Early Cretaceous tracksites dominated by large theropod footprints, in Querulpa Chico (Peru) and Chacarilla (Chile). The two sites correspond to distinct depositional environments—tidal basin/delta (Querulpa Chico) and meandering river (Chacarilla)—with both subject to extensive arid or semiarid palaeoclimatic conditions. Although most trackways show no preferred orientation, a clear relationship between two trackmakers is observed in one instance. This observation, coupled with the high abundance of trackways belonging to distinct large theropods, and the exclusion of tracks of other animals, suggests some degree of grouping behaviour. The presence of freshwater sources in a dry climate and perhaps social behaviour such as pair bonding may have promoted interactions between large carnivores. Further, the occurrence of these two tracksites confirms that large theropod dinosaurs, possibly spinosaurids and/or carcharodontosaurids, existed on the western margin of Gondwana as early as the earliest Cretaceous.es_ES
dc.format.extentp. 73–83es_ES
dc.publisherPolska Akademia Naukes_ES
dc.titleLarge theropod dinosaur footprint associations in western Gondwana: Behavioural and palaeogeographic implicationses_ES
dc.rights.licenseCreative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)-
dc.description.filiationMoreno, Karen. Universidad Austral de Chile. Laboratorio de Paleoecología. Valdivia, Chile.es_ES
dc.description.filiationde Valais, Silvina. Universidad Nacional de Rio Negro. Instituto de Investigaciones en Paleobiologia y Geologia. Río Negro, Argentina.es_ES
dc.description.filiationBlanco, Nicolás. Servicio Nacional de Geología y Minería. Santiago, Chile.es_ES
dc.description.filiationTomlinson, Andrew. Servicio Nacional de Geología y Minería. Santiago, Chile.es_ES
dc.description.filiationJacay, Javier. Universidad Nacional Mayor de San Marcos, EAP Ingeniería Geológica. Lima, Perú.es_ES
dc.description.filiationCalvo, Jorge. Universidad Nacional del Comahue. Centro Paleontológico Lago Barreales. Neuquén, Argentina.es_ES
dc.subject.keywordEarly Cretaceouses_ES
dc.origin.lugarDesarrolloUniversidad Nacional de Río Negro. Instituto de Investigación en Paleobiología y Geología.es_ES
dc.relation.journalissue57 (1)es_ES
dc.relation.journalTitleActa Palaeontologica Polonicaes_ES
Aparece en las colecciones: Artículos

Archivos en este ítem:
Archivo Descripción Tamaño Formato  
Moreno et al 2012-Large theropod dinosaur footprint associations in Western Gondwana.pdf740,5 kBAdobe PDFVisualizar/Abrir

Este documento es resultado del financiamiento otorgado por el Estado Nacional, por lo tanto queda sujeto al cumplimiento de la Ley N° 26.899

Este ítem está sujeto a una licencia Creative Commons Licencia Creative Commons Creative Commons