First record of gastroliths associated with elasmosaur remains from La Colonia Formation (CampanianeMaastrichtian), Chubut, Patagonia Argentina, with comments on the probable depos...

Autores
O'gorman, Jose Patricio; Salgado, Leonardo; Cerda, Ignacio Alejandro; Brandoni, Zulma Nelida
Año de publicación
2013
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
A gastrolith set, comprising 197 elements, associated with an indeterminate elasmosaurid plesiosaur collected from the CampanianeMaastrichtian La Colonia Formation, Chubut, Argentina, is described. Most of the gastroliths are discoidal (41.9%) or spheroidal (34.8%), with a mean Maximum Projection Sphericity Index value of 0.69 and a mean OP Index value of 0.74. The values of these indices are compared with those recorded for gastroliths associated with other Upper Cretaceous elasmosaurids to see if patterns with palaeobiological relevance are evident. The mean values of the Maximum Projection Sphericity Index and the Oblate-Prolate Index allow us to infer a fluvial or estuarine origin for all the elasmosaurid gastroliths for which these indices have been calculated. This inference is palaeobiologically informative because it indicates that at least some Upper Cretaceous elasmosaurs entered into estuarine (or fluvial) environments. It also helps explain the interesting vertebrate assemblage of the Allen and La Colonia formations where a rich continental fauna is recorded but elasmosaurids and polycotylids are the only well represented vertebrates with marine affinities.
Fil: O'gorman, Jose Patricio. Universidad Nacional de La Plata, Museo de La Plata, División Paleontología Vertebrados; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Salgado, Leonardo. Universidad Nacional de Rio Negro; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Cerda, Ignacio Alejandro. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Patagonia Norte. Instituto de Investigación en Biodiversidad y Medioambiente; Argentina
Fil: Brandoni, Zulma Nelida. Universidad Nacional de La Plata, Museo de La Plata, División Paleontología Vertebrados; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Materia
Elasmosauridae
Gastroliths
Upper Cretaceous
La Colonia Formation
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/7325
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/7325
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling First record of gastroliths associated with elasmosaur remains from La Colonia Formation (CampanianeMaastrichtian), Chubut, Patagonia Argentina, with comments on the probable depositional palaeoenvironment of the source of the gastrolithsO'gorman, Jose PatricioSalgado, LeonardoCerda, Ignacio AlejandroBrandoni, Zulma NelidaElasmosauridaeGastrolithsUpper CretaceousLa Colonia Formationhttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1A gastrolith set, comprising 197 elements, associated with an indeterminate elasmosaurid plesiosaur collected from the CampanianeMaastrichtian La Colonia Formation, Chubut, Argentina, is described. Most of the gastroliths are discoidal (41.9%) or spheroidal (34.8%), with a mean Maximum Projection Sphericity Index value of 0.69 and a mean OP Index value of 0.74. The values of these indices are compared with those recorded for gastroliths associated with other Upper Cretaceous elasmosaurids to see if patterns with palaeobiological relevance are evident. The mean values of the Maximum Projection Sphericity Index and the Oblate-Prolate Index allow us to infer a fluvial or estuarine origin for all the elasmosaurid gastroliths for which these indices have been calculated. This inference is palaeobiologically informative because it indicates that at least some Upper Cretaceous elasmosaurs entered into estuarine (or fluvial) environments. It also helps explain the interesting vertebrate assemblage of the Allen and La Colonia formations where a rich continental fauna is recorded but elasmosaurids and polycotylids are the only well represented vertebrates with marine affinities.Fil: O'gorman, Jose Patricio. Universidad Nacional de La Plata, Museo de La Plata, División Paleontología Vertebrados; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Salgado, Leonardo. Universidad Nacional de Rio Negro; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Cerda, Ignacio Alejandro. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Patagonia Norte. Instituto de Investigación en Biodiversidad y Medioambiente; ArgentinaFil: Brandoni, Zulma Nelida. Universidad Nacional de La Plata, Museo de La Plata, División Paleontología Vertebrados; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaElsevier2013-03-31info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/7325O'gorman, Jose Patricio; Salgado, Leonardo; Cerda, Ignacio Alejandro; Brandoni, Zulma Nelida; First record of gastroliths associated with elasmosaur remains from La Colonia Formation (CampanianeMaastrichtian), Chubut, Patagonia Argentina, with comments on the probable depositional palaeoenvironment of the source of the gastroliths; Elsevier; Cretaceous Research; 40; 31-3-2013; 212-2170195-6671enginfo:eu-repo/semantics/altIdentifier/doi/10.1016/j.cretres.2012.07.004info:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S0195667112001231info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-nd/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-03T09:47:02Zoai:ri.conicet.gov.ar:11336/7325instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-03 09:47:03.196CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv First record of gastroliths associated with elasmosaur remains from La Colonia Formation (CampanianeMaastrichtian), Chubut, Patagonia Argentina, with comments on the probable depositional palaeoenvironment of the source of the gastroliths
title First record of gastroliths associated with elasmosaur remains from La Colonia Formation (CampanianeMaastrichtian), Chubut, Patagonia Argentina, with comments on the probable depositional palaeoenvironment of the source of the gastroliths
spellingShingle First record of gastroliths associated with elasmosaur remains from La Colonia Formation (CampanianeMaastrichtian), Chubut, Patagonia Argentina, with comments on the probable depositional palaeoenvironment of the source of the gastroliths
O'gorman, Jose Patricio
Elasmosauridae
Gastroliths
Upper Cretaceous
La Colonia Formation
title_short First record of gastroliths associated with elasmosaur remains from La Colonia Formation (CampanianeMaastrichtian), Chubut, Patagonia Argentina, with comments on the probable depositional palaeoenvironment of the source of the gastroliths
title_full First record of gastroliths associated with elasmosaur remains from La Colonia Formation (CampanianeMaastrichtian), Chubut, Patagonia Argentina, with comments on the probable depositional palaeoenvironment of the source of the gastroliths
title_fullStr First record of gastroliths associated with elasmosaur remains from La Colonia Formation (CampanianeMaastrichtian), Chubut, Patagonia Argentina, with comments on the probable depositional palaeoenvironment of the source of the gastroliths
title_full_unstemmed First record of gastroliths associated with elasmosaur remains from La Colonia Formation (CampanianeMaastrichtian), Chubut, Patagonia Argentina, with comments on the probable depositional palaeoenvironment of the source of the gastroliths
title_sort First record of gastroliths associated with elasmosaur remains from La Colonia Formation (CampanianeMaastrichtian), Chubut, Patagonia Argentina, with comments on the probable depositional palaeoenvironment of the source of the gastroliths
dc.creator.none.fl_str_mv O'gorman, Jose Patricio
Salgado, Leonardo
Cerda, Ignacio Alejandro
Brandoni, Zulma Nelida
author O'gorman, Jose Patricio
author_facet O'gorman, Jose Patricio
Salgado, Leonardo
Cerda, Ignacio Alejandro
Brandoni, Zulma Nelida
author_role author
author2 Salgado, Leonardo
Cerda, Ignacio Alejandro
Brandoni, Zulma Nelida
author2_role author
author
author
dc.subject.none.fl_str_mv Elasmosauridae
Gastroliths
Upper Cretaceous
La Colonia Formation
topic Elasmosauridae
Gastroliths
Upper Cretaceous
La Colonia Formation
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.5
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv A gastrolith set, comprising 197 elements, associated with an indeterminate elasmosaurid plesiosaur collected from the CampanianeMaastrichtian La Colonia Formation, Chubut, Argentina, is described. Most of the gastroliths are discoidal (41.9%) or spheroidal (34.8%), with a mean Maximum Projection Sphericity Index value of 0.69 and a mean OP Index value of 0.74. The values of these indices are compared with those recorded for gastroliths associated with other Upper Cretaceous elasmosaurids to see if patterns with palaeobiological relevance are evident. The mean values of the Maximum Projection Sphericity Index and the Oblate-Prolate Index allow us to infer a fluvial or estuarine origin for all the elasmosaurid gastroliths for which these indices have been calculated. This inference is palaeobiologically informative because it indicates that at least some Upper Cretaceous elasmosaurs entered into estuarine (or fluvial) environments. It also helps explain the interesting vertebrate assemblage of the Allen and La Colonia formations where a rich continental fauna is recorded but elasmosaurids and polycotylids are the only well represented vertebrates with marine affinities.
Fil: O'gorman, Jose Patricio. Universidad Nacional de La Plata, Museo de La Plata, División Paleontología Vertebrados; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Salgado, Leonardo. Universidad Nacional de Rio Negro; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Cerda, Ignacio Alejandro. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Patagonia Norte. Instituto de Investigación en Biodiversidad y Medioambiente; Argentina
Fil: Brandoni, Zulma Nelida. Universidad Nacional de La Plata, Museo de La Plata, División Paleontología Vertebrados; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
description A gastrolith set, comprising 197 elements, associated with an indeterminate elasmosaurid plesiosaur collected from the CampanianeMaastrichtian La Colonia Formation, Chubut, Argentina, is described. Most of the gastroliths are discoidal (41.9%) or spheroidal (34.8%), with a mean Maximum Projection Sphericity Index value of 0.69 and a mean OP Index value of 0.74. The values of these indices are compared with those recorded for gastroliths associated with other Upper Cretaceous elasmosaurids to see if patterns with palaeobiological relevance are evident. The mean values of the Maximum Projection Sphericity Index and the Oblate-Prolate Index allow us to infer a fluvial or estuarine origin for all the elasmosaurid gastroliths for which these indices have been calculated. This inference is palaeobiologically informative because it indicates that at least some Upper Cretaceous elasmosaurs entered into estuarine (or fluvial) environments. It also helps explain the interesting vertebrate assemblage of the Allen and La Colonia formations where a rich continental fauna is recorded but elasmosaurids and polycotylids are the only well represented vertebrates with marine affinities.
publishDate 2013
dc.date.none.fl_str_mv 2013-03-31
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 http://hdl.handle.net/11336/7325
O'gorman, Jose Patricio; Salgado, Leonardo; Cerda, Ignacio Alejandro; Brandoni, Zulma Nelida; First record of gastroliths associated with elasmosaur remains from La Colonia Formation (CampanianeMaastrichtian), Chubut, Patagonia Argentina, with comments on the probable depositional palaeoenvironment of the source of the gastroliths; Elsevier; Cretaceous Research; 40; 31-3-2013; 212-217
0195-6671
url http://hdl.handle.net/11336/7325
identifier_str_mv O'gorman, Jose Patricio; Salgado, Leonardo; Cerda, Ignacio Alejandro; Brandoni, Zulma Nelida; First record of gastroliths associated with elasmosaur remains from La Colonia Formation (CampanianeMaastrichtian), Chubut, Patagonia Argentina, with comments on the probable depositional palaeoenvironment of the source of the gastroliths; Elsevier; Cretaceous Research; 40; 31-3-2013; 212-217
0195-6671
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1016/j.cretres.2012.07.004
info:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S0195667112001231
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 13.13397

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