Large theropod dinosaur footprint associations in western Gondwana: Behavioural and palaeogeographic implications

Autores
Moreno, Karen; de Valais, Silvina; Blanco, Nicolás; Tomlinson, Andrew; Jacay, Javier; Calvo, Jorge O.
Año de publicación
2012
Idioma
español castellano
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Fil: Moreno, Karen. Universidad Austral de Chile. Laboratorio de Paleoecología. Valdivia, Chile.
Fil: de Valais, Silvina. Universidad Nacional de Rio Negro. Instituto de Investigaciones en Paleobiologia y Geologia. Río Negro, Argentina.
Fil: Blanco, Nicolás. Servicio Nacional de Geología y Minería. Santiago, Chile.
Fil: Tomlinson, Andrew. Servicio Nacional de Geología y Minería. Santiago, Chile.
Fil: Jacay, Javier. Universidad Nacional Mayor de San Marcos, EAP Ingeniería Geológica. Lima, Perú.
Fil: Calvo, Jorge. Universidad Nacional del Comahue. Centro Paleontológico Lago Barreales. Neuquén, Argentina.
In 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.
-
Materia
Paleontología
Theropoda,
Footprints
Behaviour
Palaeogeography
Early Cretaceous
Gondwana
Chile
Peru
Paleontología
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/4.0/
Repositorio
RID-UNRN (UNRN)
Institución
Universidad Nacional de Río Negro
OAI Identificador
oai:rid.unrn.edu.ar:20.500.12049/5873
Acceder
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network_acronym_str RIDUNRN
repository_id_str 4369
network_name_str RID-UNRN (UNRN)
spelling Large theropod dinosaur footprint associations in western Gondwana: Behavioural and palaeogeographic implicationsMoreno, Karende Valais, SilvinaBlanco, NicolásTomlinson, AndrewJacay, JavierCalvo, Jorge O.PaleontologíaTheropoda,FootprintsBehaviourPalaeogeographyEarly CretaceousGondwanaChilePeruPaleontologíaFil: Moreno, Karen. Universidad Austral de Chile. Laboratorio de Paleoecología. Valdivia, Chile.Fil: de Valais, Silvina. Universidad Nacional de Rio Negro. Instituto de Investigaciones en Paleobiologia y Geologia. Río Negro, Argentina.Fil: Blanco, Nicolás. Servicio Nacional de Geología y Minería. Santiago, Chile.Fil: Tomlinson, Andrew. Servicio Nacional de Geología y Minería. Santiago, Chile.Fil: Jacay, Javier. Universidad Nacional Mayor de San Marcos, EAP Ingeniería Geológica. Lima, Perú.Fil: Calvo, Jorge. Universidad Nacional del Comahue. Centro Paleontológico Lago Barreales. Neuquén, Argentina.In 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.-Polska Akademia Nauk2012info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfMoreno, 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); 73–83.1732-24210567-7920https://www.mendeley.com/catalogue/4f87c008-f542-321b-aed5-6c841cc8cdd1/http://rid.unrn.edu.ar/handle/20.500.12049/5873http://dx.doi.org/10.4202/app.2010.0119spa57 (1)Acta Palaeontologica Polonicainfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/4.0/reponame:RID-UNRN (UNRN)instname:Universidad Nacional de Río Negro2025-09-29T14:29:15Zoai:rid.unrn.edu.ar:20.500.12049/5873instacron:UNRNInstitucionalhttps://rid.unrn.edu.ar/jspui/Universidad públicaNo correspondehttps://rid.unrn.edu.ar/oai/snrdrid@unrn.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:43692025-09-29 14:29:15.711RID-UNRN (UNRN) - Universidad Nacional de Río Negrofalse
dc.title.none.fl_str_mv Large theropod dinosaur footprint associations in western Gondwana: Behavioural and palaeogeographic implications
title Large theropod dinosaur footprint associations in western Gondwana: Behavioural and palaeogeographic implications
spellingShingle Large theropod dinosaur footprint associations in western Gondwana: Behavioural and palaeogeographic implications
Moreno, Karen
Paleontología
Theropoda,
Footprints
Behaviour
Palaeogeography
Early Cretaceous
Gondwana
Chile
Peru
Paleontología
title_short Large theropod dinosaur footprint associations in western Gondwana: Behavioural and palaeogeographic implications
title_full Large theropod dinosaur footprint associations in western Gondwana: Behavioural and palaeogeographic implications
title_fullStr Large theropod dinosaur footprint associations in western Gondwana: Behavioural and palaeogeographic implications
title_full_unstemmed Large theropod dinosaur footprint associations in western Gondwana: Behavioural and palaeogeographic implications
title_sort Large theropod dinosaur footprint associations in western Gondwana: Behavioural and palaeogeographic implications
dc.creator.none.fl_str_mv Moreno, Karen
de Valais, Silvina
Blanco, Nicolás
Tomlinson, Andrew
Jacay, Javier
Calvo, Jorge O.
author Moreno, Karen
author_facet Moreno, Karen
de Valais, Silvina
Blanco, Nicolás
Tomlinson, Andrew
Jacay, Javier
Calvo, Jorge O.
author_role author
author2 de Valais, Silvina
Blanco, Nicolás
Tomlinson, Andrew
Jacay, Javier
Calvo, Jorge O.
author2_role author
author
author
author
author
dc.subject.none.fl_str_mv Paleontología
Theropoda,
Footprints
Behaviour
Palaeogeography
Early Cretaceous
Gondwana
Chile
Peru
Paleontología
topic Paleontología
Theropoda,
Footprints
Behaviour
Palaeogeography
Early Cretaceous
Gondwana
Chile
Peru
Paleontología
dc.description.none.fl_txt_mv Fil: Moreno, Karen. Universidad Austral de Chile. Laboratorio de Paleoecología. Valdivia, Chile.
Fil: de Valais, Silvina. Universidad Nacional de Rio Negro. Instituto de Investigaciones en Paleobiologia y Geologia. Río Negro, Argentina.
Fil: Blanco, Nicolás. Servicio Nacional de Geología y Minería. Santiago, Chile.
Fil: Tomlinson, Andrew. Servicio Nacional de Geología y Minería. Santiago, Chile.
Fil: Jacay, Javier. Universidad Nacional Mayor de San Marcos, EAP Ingeniería Geológica. Lima, Perú.
Fil: Calvo, Jorge. Universidad Nacional del Comahue. Centro Paleontológico Lago Barreales. Neuquén, Argentina.
In 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.
-
description Fil: Moreno, Karen. Universidad Austral de Chile. Laboratorio de Paleoecología. Valdivia, Chile.
publishDate 2012
dc.date.none.fl_str_mv 2012
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv Moreno, 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.
1732-2421
0567-7920
https://www.mendeley.com/catalogue/4f87c008-f542-321b-aed5-6c841cc8cdd1/
http://rid.unrn.edu.ar/handle/20.500.12049/5873
http://dx.doi.org/10.4202/app.2010.0119
identifier_str_mv Moreno, 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.
1732-2421
0567-7920
url https://www.mendeley.com/catalogue/4f87c008-f542-321b-aed5-6c841cc8cdd1/
http://rid.unrn.edu.ar/handle/20.500.12049/5873
http://dx.doi.org/10.4202/app.2010.0119
dc.language.none.fl_str_mv spa
language spa
dc.relation.none.fl_str_mv 57 (1)
Acta Palaeontologica Polonica
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/4.0/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/4.0/
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Polska Akademia Nauk
publisher.none.fl_str_mv Polska Akademia Nauk
dc.source.none.fl_str_mv reponame:RID-UNRN (UNRN)
instname:Universidad Nacional de Río Negro
reponame_str RID-UNRN (UNRN)
collection RID-UNRN (UNRN)
instname_str Universidad Nacional de Río Negro
repository.name.fl_str_mv RID-UNRN (UNRN) - Universidad Nacional de Río Negro
repository.mail.fl_str_mv rid@unrn.edu.ar
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score 12.559606

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