Stable isotope composition of a vertebrate assemblage from the Tacuarembó Formation, Uruguay (Late Jurassic-Early Cretaceous): Geochemical insight into an arid continental environm...

Autores
Leuzinger, Léa Sylvia; Luz, Z.; Soto, M.; Perea, D.
Año de publicación
2019
Idioma
español castellano
Tipo de recurso
documento de conferencia
Estado
versión publicada
Descripción
The Late Jurassic–Early Cretaceous Tacuarembó Formation (Uruguay) consists of aeolian dunes, ephemeral and perennial river deposits that are part of the vast Botucatu Desert, Parana Basin. It preserved a diverse vertebrate assemblage of great importance, considering the scarcity of continental fossil records of that period in Gondwana, and of vertebrate body fossils from paleodeserts worldwide. Isotopic studies on vertebrates of these settings and age are also rare; however they are important to precise paleoenvironmental and paleoclimatic parameters. We ran oxygen (δ18O) and carbon (δ13C) stable isotope analyses (n=21) on theropods, crocodyliforms and fish teeth of the Batoví Member at the UNIL, Switzerland. Clear and consistent differences between the δ18Ophosphate of enamel and dentine, and between the δ18Ophosphate and δ18Ostructural carbonate of the same fossils speak for a good preservation of the isotopic signature in enamel. The δ18Ophosphate of tooth enamel (22.6‰VSMOW), heavy for continental settings, 53 indicates an arid climate inducing strong evaporation of the local water, in agreement with the harsh conditions generally described for inner Gondwana at that period. Our results are comparable with other isotopic studies on contemporaneous sites from central Africa, also occupying an inland paleogeographical position. Estimates based on preexisting equations yield water temperatures of 20–25°C and a δ18Owater of ~0.4‰VSMOW. The δ13Cstructural carbonate of theropod enamel (–7.6‰VPDB), much lower than in crocodiles (–4.0‰VPDB) and bony fish (–1.6‰VPDB), suggests that the diet of theropods was principally composed of terrestrial animals, and not on aquatic nor semiaquatic preys.
Fil: Leuzinger, Léa Sylvia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Regional de Investigaciones Científicas y Transferencia Tecnológica de La Rioja. - Universidad Nacional de La Rioja. Centro Regional de Investigaciones Científicas y Transferencia Tecnológica de La Rioja. - Universidad Nacional de Catamarca. Centro Regional de Investigaciones Científicas y Transferencia Tecnológica de La Rioja. - Secretaría de Industria y Minería. Servicio Geológico Minero Argentino. Centro Regional de Investigaciones Científicas y Transferencia Tecnológica de La Rioja. - Provincia de La Rioja. Centro Regional de Investigaciones Científicas y Transferencia Tecnológica de La Rioja; Argentina
Fil: Luz, Z.. Universite de Lausanne; Suiza
Fil: Soto, M.. Universidad de la República. Instituto de Ciencias Geológicas; Uruguay
Fil: Perea, D.. Universidad de la República. Instituto de Ciencias Geológicas; Uruguay
33as Jornadas Argentinas de Paleontología de Vertebrados
Córdoba
Argentina
Universidad Nacional de Córdoba. Facultad de Ciencias Exactas, Físicas y Naturales
Universidad Nacional de Córdoba. Facultad de Ciencias Exactas, Físicas y Naturales. Museo de Paleontología
Museo Provincial de Ciencias Naturales Dr. Arturo Umberto Illía
Centro de Investigaciones en Ciencias de la Tierra
Materia
Stable isotopes
Late Jurassic
Continental vertebrates
Fm Tacuarembó
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/156782
Acceder
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network_name_str CONICET Digital (CONICET)
spelling Stable isotope composition of a vertebrate assemblage from the Tacuarembó Formation, Uruguay (Late Jurassic-Early Cretaceous): Geochemical insight into an arid continental environmentLeuzinger, Léa SylviaLuz, Z.Soto, M.Perea, D.Stable isotopesLate JurassicContinental vertebratesFm Tacuarembóhttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1The Late Jurassic–Early Cretaceous Tacuarembó Formation (Uruguay) consists of aeolian dunes, ephemeral and perennial river deposits that are part of the vast Botucatu Desert, Parana Basin. It preserved a diverse vertebrate assemblage of great importance, considering the scarcity of continental fossil records of that period in Gondwana, and of vertebrate body fossils from paleodeserts worldwide. Isotopic studies on vertebrates of these settings and age are also rare; however they are important to precise paleoenvironmental and paleoclimatic parameters. We ran oxygen (δ18O) and carbon (δ13C) stable isotope analyses (n=21) on theropods, crocodyliforms and fish teeth of the Batoví Member at the UNIL, Switzerland. Clear and consistent differences between the δ18Ophosphate of enamel and dentine, and between the δ18Ophosphate and δ18Ostructural carbonate of the same fossils speak for a good preservation of the isotopic signature in enamel. The δ18Ophosphate of tooth enamel (22.6‰VSMOW), heavy for continental settings, 53 indicates an arid climate inducing strong evaporation of the local water, in agreement with the harsh conditions generally described for inner Gondwana at that period. Our results are comparable with other isotopic studies on contemporaneous sites from central Africa, also occupying an inland paleogeographical position. Estimates based on preexisting equations yield water temperatures of 20–25°C and a δ18Owater of ~0.4‰VSMOW. The δ13Cstructural carbonate of theropod enamel (–7.6‰VPDB), much lower than in crocodiles (–4.0‰VPDB) and bony fish (–1.6‰VPDB), suggests that the diet of theropods was principally composed of terrestrial animals, and not on aquatic nor semiaquatic preys.Fil: Leuzinger, Léa Sylvia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Regional de Investigaciones Científicas y Transferencia Tecnológica de La Rioja. - Universidad Nacional de La Rioja. Centro Regional de Investigaciones Científicas y Transferencia Tecnológica de La Rioja. - Universidad Nacional de Catamarca. Centro Regional de Investigaciones Científicas y Transferencia Tecnológica de La Rioja. - Secretaría de Industria y Minería. Servicio Geológico Minero Argentino. Centro Regional de Investigaciones Científicas y Transferencia Tecnológica de La Rioja. - Provincia de La Rioja. Centro Regional de Investigaciones Científicas y Transferencia Tecnológica de La Rioja; ArgentinaFil: Luz, Z.. Universite de Lausanne; SuizaFil: Soto, M.. Universidad de la República. Instituto de Ciencias Geológicas; UruguayFil: Perea, D.. Universidad de la República. Instituto de Ciencias Geológicas; Uruguay33as Jornadas Argentinas de Paleontología de VertebradosCórdobaArgentinaUniversidad Nacional de Córdoba. Facultad de Ciencias Exactas, Físicas y NaturalesUniversidad Nacional de Córdoba. Facultad de Ciencias Exactas, Físicas y Naturales. Museo de PaleontologíaMuseo Provincial de Ciencias Naturales Dr. Arturo Umberto IllíaCentro de Investigaciones en Ciencias de la TierraAsociación Paleontológica Argentina2019info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/conferenceObjectJornadaJournalhttp://purl.org/coar/resource_type/c_5794info:ar-repo/semantics/documentoDeConferenciaapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/156782Stable isotope composition of a vertebrate assemblage from the Tacuarembó Formation, Uruguay (Late Jurassic-Early Cretaceous): Geochemical insight into an arid continental environment; 33as Jornadas Argentinas de Paleontología de Vertebrados; Córdoba; Argentina; 2019; 20-202469-0228CONICET DigitalCONICETspainfo:eu-repo/semantics/altIdentifier/url/https://www.peapaleontologica.org.ar/index.php/peapa/article/view/307Nacionalinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-03T09:57:07Zoai:ri.conicet.gov.ar:11336/156782instacron: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 09:57:07.711CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Stable isotope composition of a vertebrate assemblage from the Tacuarembó Formation, Uruguay (Late Jurassic-Early Cretaceous): Geochemical insight into an arid continental environment
title Stable isotope composition of a vertebrate assemblage from the Tacuarembó Formation, Uruguay (Late Jurassic-Early Cretaceous): Geochemical insight into an arid continental environment
spellingShingle Stable isotope composition of a vertebrate assemblage from the Tacuarembó Formation, Uruguay (Late Jurassic-Early Cretaceous): Geochemical insight into an arid continental environment
Leuzinger, Léa Sylvia
Stable isotopes
Late Jurassic
Continental vertebrates
Fm Tacuarembó
title_short Stable isotope composition of a vertebrate assemblage from the Tacuarembó Formation, Uruguay (Late Jurassic-Early Cretaceous): Geochemical insight into an arid continental environment
title_full Stable isotope composition of a vertebrate assemblage from the Tacuarembó Formation, Uruguay (Late Jurassic-Early Cretaceous): Geochemical insight into an arid continental environment
title_fullStr Stable isotope composition of a vertebrate assemblage from the Tacuarembó Formation, Uruguay (Late Jurassic-Early Cretaceous): Geochemical insight into an arid continental environment
title_full_unstemmed Stable isotope composition of a vertebrate assemblage from the Tacuarembó Formation, Uruguay (Late Jurassic-Early Cretaceous): Geochemical insight into an arid continental environment
title_sort Stable isotope composition of a vertebrate assemblage from the Tacuarembó Formation, Uruguay (Late Jurassic-Early Cretaceous): Geochemical insight into an arid continental environment
dc.creator.none.fl_str_mv Leuzinger, Léa Sylvia
Luz, Z.
Soto, M.
Perea, D.
author Leuzinger, Léa Sylvia
author_facet Leuzinger, Léa Sylvia
Luz, Z.
Soto, M.
Perea, D.
author_role author
author2 Luz, Z.
Soto, M.
Perea, D.
author2_role author
author
author
dc.subject.none.fl_str_mv Stable isotopes
Late Jurassic
Continental vertebrates
Fm Tacuarembó
topic Stable isotopes
Late Jurassic
Continental vertebrates
Fm Tacuarembó
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.5
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv The Late Jurassic–Early Cretaceous Tacuarembó Formation (Uruguay) consists of aeolian dunes, ephemeral and perennial river deposits that are part of the vast Botucatu Desert, Parana Basin. It preserved a diverse vertebrate assemblage of great importance, considering the scarcity of continental fossil records of that period in Gondwana, and of vertebrate body fossils from paleodeserts worldwide. Isotopic studies on vertebrates of these settings and age are also rare; however they are important to precise paleoenvironmental and paleoclimatic parameters. We ran oxygen (δ18O) and carbon (δ13C) stable isotope analyses (n=21) on theropods, crocodyliforms and fish teeth of the Batoví Member at the UNIL, Switzerland. Clear and consistent differences between the δ18Ophosphate of enamel and dentine, and between the δ18Ophosphate and δ18Ostructural carbonate of the same fossils speak for a good preservation of the isotopic signature in enamel. The δ18Ophosphate of tooth enamel (22.6‰VSMOW), heavy for continental settings, 53 indicates an arid climate inducing strong evaporation of the local water, in agreement with the harsh conditions generally described for inner Gondwana at that period. Our results are comparable with other isotopic studies on contemporaneous sites from central Africa, also occupying an inland paleogeographical position. Estimates based on preexisting equations yield water temperatures of 20–25°C and a δ18Owater of ~0.4‰VSMOW. The δ13Cstructural carbonate of theropod enamel (–7.6‰VPDB), much lower than in crocodiles (–4.0‰VPDB) and bony fish (–1.6‰VPDB), suggests that the diet of theropods was principally composed of terrestrial animals, and not on aquatic nor semiaquatic preys.
Fil: Leuzinger, Léa Sylvia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Regional de Investigaciones Científicas y Transferencia Tecnológica de La Rioja. - Universidad Nacional de La Rioja. Centro Regional de Investigaciones Científicas y Transferencia Tecnológica de La Rioja. - Universidad Nacional de Catamarca. Centro Regional de Investigaciones Científicas y Transferencia Tecnológica de La Rioja. - Secretaría de Industria y Minería. Servicio Geológico Minero Argentino. Centro Regional de Investigaciones Científicas y Transferencia Tecnológica de La Rioja. - Provincia de La Rioja. Centro Regional de Investigaciones Científicas y Transferencia Tecnológica de La Rioja; Argentina
Fil: Luz, Z.. Universite de Lausanne; Suiza
Fil: Soto, M.. Universidad de la República. Instituto de Ciencias Geológicas; Uruguay
Fil: Perea, D.. Universidad de la República. Instituto de Ciencias Geológicas; Uruguay
33as Jornadas Argentinas de Paleontología de Vertebrados
Córdoba
Argentina
Universidad Nacional de Córdoba. Facultad de Ciencias Exactas, Físicas y Naturales
Universidad Nacional de Córdoba. Facultad de Ciencias Exactas, Físicas y Naturales. Museo de Paleontología
Museo Provincial de Ciencias Naturales Dr. Arturo Umberto Illía
Centro de Investigaciones en Ciencias de la Tierra
description The Late Jurassic–Early Cretaceous Tacuarembó Formation (Uruguay) consists of aeolian dunes, ephemeral and perennial river deposits that are part of the vast Botucatu Desert, Parana Basin. It preserved a diverse vertebrate assemblage of great importance, considering the scarcity of continental fossil records of that period in Gondwana, and of vertebrate body fossils from paleodeserts worldwide. Isotopic studies on vertebrates of these settings and age are also rare; however they are important to precise paleoenvironmental and paleoclimatic parameters. We ran oxygen (δ18O) and carbon (δ13C) stable isotope analyses (n=21) on theropods, crocodyliforms and fish teeth of the Batoví Member at the UNIL, Switzerland. Clear and consistent differences between the δ18Ophosphate of enamel and dentine, and between the δ18Ophosphate and δ18Ostructural carbonate of the same fossils speak for a good preservation of the isotopic signature in enamel. The δ18Ophosphate of tooth enamel (22.6‰VSMOW), heavy for continental settings, 53 indicates an arid climate inducing strong evaporation of the local water, in agreement with the harsh conditions generally described for inner Gondwana at that period. Our results are comparable with other isotopic studies on contemporaneous sites from central Africa, also occupying an inland paleogeographical position. Estimates based on preexisting equations yield water temperatures of 20–25°C and a δ18Owater of ~0.4‰VSMOW. The δ13Cstructural carbonate of theropod enamel (–7.6‰VPDB), much lower than in crocodiles (–4.0‰VPDB) and bony fish (–1.6‰VPDB), suggests that the diet of theropods was principally composed of terrestrial animals, and not on aquatic nor semiaquatic preys.
publishDate 2019
dc.date.none.fl_str_mv 2019
dc.type.none.fl_str_mv info:eu-repo/semantics/publishedVersion
info:eu-repo/semantics/conferenceObject
Jornada
Journal
http://purl.org/coar/resource_type/c_5794
info:ar-repo/semantics/documentoDeConferencia
status_str publishedVersion
format conferenceObject
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/156782
Stable isotope composition of a vertebrate assemblage from the Tacuarembó Formation, Uruguay (Late Jurassic-Early Cretaceous): Geochemical insight into an arid continental environment; 33as Jornadas Argentinas de Paleontología de Vertebrados; Córdoba; Argentina; 2019; 20-20
2469-0228
CONICET Digital
CONICET
url http://hdl.handle.net/11336/156782
identifier_str_mv Stable isotope composition of a vertebrate assemblage from the Tacuarembó Formation, Uruguay (Late Jurassic-Early Cretaceous): Geochemical insight into an arid continental environment; 33as Jornadas Argentinas de Paleontología de Vertebrados; Córdoba; Argentina; 2019; 20-20
2469-0228
CONICET Digital
CONICET
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language spa
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/https://www.peapaleontologica.org.ar/index.php/peapa/article/view/307
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https://creativecommons.org/licenses/by-nc/2.5/ar/
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dc.publisher.none.fl_str_mv Asociación Paleontológica Argentina
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