Cenozoic marine turtle record from southern South America: New insights from the Miocene of Patagonia, Argentina

Autores
Sterli, Juliana; Vlachos, Evangelos; Cuitiño, José Ignacio; Buono, Mónica Romina; Viglino, Mariana
Año de publicación
2021
Idioma
inglés
Tipo de recurso
documento de conferencia
Estado
versión publicada
Descripción
The study of marine turtles is a challenging topic because of the cosmopolitan nature of its fossil record and current distribution. Thus, it might be difficult to study and compare specimens, but sometimes even the smallest fragments or isolated occurrences might provide significant new information for the whole group. The Cenozoic fossil record of marine turtles (Pan-Chelonioidea) in South America is scarce with less than 10 published occurrences. The southernmost published record corresponds to a fragmentary and undetermined specimen of pan-dermochelyid (MPEF-PV 565) from the lower Miocene Gaiman Formation in Chubut province, Patagonia, Argentina. However, recent fieldwork has significantly increased the record of marine turtles from northeastern Chubut. The fossil record of pan-dermochelyids was increased with two findings from the Gaiman Formation: one fragmentary consisting of two ossicles (MPEF-PV 11360) and an almost complete carapace with associated postcranium (MPEF-PV 10918). Furthermore, also from the Gaiman Formation, a lower jaw of a pan-cheloniid (MPEF-PV 11382) was found. This group was also recently found in the upper Miocene Puerto Madryn Formation, represented by shell and postcranial remains (MPEF-PV 10929) and a skull (MPEF-PV 2577) coming from Gaiman or Puerto Madryn formations. In summary, we can conclude that: (1) the northeastern Chubut presents the most diverse and abundant record of chelonioid turtles in the Atlantic coast of South America; (2) the reported pan-cheloniid specimens expand the stratigraphic and geographic range of the group in the Atlantic coast in the Neogene; (3) the almost complete carapace of a pan-dermochelyid represents one of the most complete specimens of the group found up-to-date in the world. Thus, these new findings will provide valuable information on the anatomy, taxonomy, and diversity of the marine turtles that once populated the southwestern Atlantic sea and coasts of southern South America.
Fil: Sterli, Juliana. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Museo Paleontológico Egidio Feruglio; Argentina
Fil: Vlachos, Evangelos. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Museo Paleontológico Egidio Feruglio; Argentina
Fil: Cuitiño, José Ignacio. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico. Instituto Patagónico de Geología y Paleontología; Argentina
Fil: Buono, Mónica Romina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico. Instituto Patagónico de Geología y Paleontología; Argentina
Fil: Viglino, Mariana. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico. Instituto Patagónico de Geología y Paleontología; Argentina
9th International Meeting on the Secondary Adaptation of Tetrapods to Life in Water
San Vicente de Tagua Tagua
Chile
Asociación Paleontológica Argentina
Asociación Chilena de Paleontología
Materia
PAN-CHELONIOIDEA
CHUBUT
GAIMAN FORMATION
PUERTO MADRYN FORMATION
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/172864
Acceder
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spelling Cenozoic marine turtle record from southern South America: New insights from the Miocene of Patagonia, ArgentinaSterli, JulianaVlachos, EvangelosCuitiño, José IgnacioBuono, Mónica RominaViglino, MarianaPAN-CHELONIOIDEACHUBUTGAIMAN FORMATIONPUERTO MADRYN FORMATIONhttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1The study of marine turtles is a challenging topic because of the cosmopolitan nature of its fossil record and current distribution. Thus, it might be difficult to study and compare specimens, but sometimes even the smallest fragments or isolated occurrences might provide significant new information for the whole group. The Cenozoic fossil record of marine turtles (Pan-Chelonioidea) in South America is scarce with less than 10 published occurrences. The southernmost published record corresponds to a fragmentary and undetermined specimen of pan-dermochelyid (MPEF-PV 565) from the lower Miocene Gaiman Formation in Chubut province, Patagonia, Argentina. However, recent fieldwork has significantly increased the record of marine turtles from northeastern Chubut. The fossil record of pan-dermochelyids was increased with two findings from the Gaiman Formation: one fragmentary consisting of two ossicles (MPEF-PV 11360) and an almost complete carapace with associated postcranium (MPEF-PV 10918). Furthermore, also from the Gaiman Formation, a lower jaw of a pan-cheloniid (MPEF-PV 11382) was found. This group was also recently found in the upper Miocene Puerto Madryn Formation, represented by shell and postcranial remains (MPEF-PV 10929) and a skull (MPEF-PV 2577) coming from Gaiman or Puerto Madryn formations. In summary, we can conclude that: (1) the northeastern Chubut presents the most diverse and abundant record of chelonioid turtles in the Atlantic coast of South America; (2) the reported pan-cheloniid specimens expand the stratigraphic and geographic range of the group in the Atlantic coast in the Neogene; (3) the almost complete carapace of a pan-dermochelyid represents one of the most complete specimens of the group found up-to-date in the world. Thus, these new findings will provide valuable information on the anatomy, taxonomy, and diversity of the marine turtles that once populated the southwestern Atlantic sea and coasts of southern South America.Fil: Sterli, Juliana. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Museo Paleontológico Egidio Feruglio; ArgentinaFil: Vlachos, Evangelos. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Museo Paleontológico Egidio Feruglio; ArgentinaFil: Cuitiño, José Ignacio. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico. Instituto Patagónico de Geología y Paleontología; ArgentinaFil: Buono, Mónica Romina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico. Instituto Patagónico de Geología y Paleontología; ArgentinaFil: Viglino, Mariana. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico. Instituto Patagónico de Geología y Paleontología; Argentina9th International Meeting on the Secondary Adaptation of Tetrapods to Life in WaterSan Vicente de Tagua TaguaChileAsociación Paleontológica ArgentinaAsociación Chilena de PaleontologíaAsociación Chilena de PaleontologíaLoch, Ana ValenzuelaToro, Ana ValenzuelaPardo Pérez, Judith M.Buono, Mónica RominaGutstein, Carolina Simon2021info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/conferenceObjectEncuentroBookhttp://purl.org/coar/resource_type/c_5794info:ar-repo/semantics/documentoDeConferenciaapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/172864Cenozoic marine turtle record from southern South America: New insights from the Miocene of Patagonia, Argentina; 9th International Meeting on the Secondary Adaptation of Tetrapods to Life in Water; San Vicente de Tagua Tagua; Chile; 2021; 41-41CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://rid.unrn.edu.ar/bitstream/20.500.12049/8314/1/Abstracts%20Book%209th%20SECAD%20Chile%202021%20%281%29.pdfInternacionalinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-03T09:59:37Zoai:ri.conicet.gov.ar:11336/172864instacron: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 09:59:37.561CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Cenozoic marine turtle record from southern South America: New insights from the Miocene of Patagonia, Argentina
title Cenozoic marine turtle record from southern South America: New insights from the Miocene of Patagonia, Argentina
spellingShingle Cenozoic marine turtle record from southern South America: New insights from the Miocene of Patagonia, Argentina
Sterli, Juliana
PAN-CHELONIOIDEA
CHUBUT
GAIMAN FORMATION
PUERTO MADRYN FORMATION
title_short Cenozoic marine turtle record from southern South America: New insights from the Miocene of Patagonia, Argentina
title_full Cenozoic marine turtle record from southern South America: New insights from the Miocene of Patagonia, Argentina
title_fullStr Cenozoic marine turtle record from southern South America: New insights from the Miocene of Patagonia, Argentina
title_full_unstemmed Cenozoic marine turtle record from southern South America: New insights from the Miocene of Patagonia, Argentina
title_sort Cenozoic marine turtle record from southern South America: New insights from the Miocene of Patagonia, Argentina
dc.creator.none.fl_str_mv Sterli, Juliana
Vlachos, Evangelos
Cuitiño, José Ignacio
Buono, Mónica Romina
Viglino, Mariana
author Sterli, Juliana
author_facet Sterli, Juliana
Vlachos, Evangelos
Cuitiño, José Ignacio
Buono, Mónica Romina
Viglino, Mariana
author_role author
author2 Vlachos, Evangelos
Cuitiño, José Ignacio
Buono, Mónica Romina
Viglino, Mariana
author2_role author
author
author
author
dc.contributor.none.fl_str_mv Loch, Ana Valenzuela
Toro, Ana Valenzuela
Pardo Pérez, Judith M.
Buono, Mónica Romina
Gutstein, Carolina Simon
dc.subject.none.fl_str_mv PAN-CHELONIOIDEA
CHUBUT
GAIMAN FORMATION
PUERTO MADRYN FORMATION
topic PAN-CHELONIOIDEA
CHUBUT
GAIMAN FORMATION
PUERTO MADRYN 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 The study of marine turtles is a challenging topic because of the cosmopolitan nature of its fossil record and current distribution. Thus, it might be difficult to study and compare specimens, but sometimes even the smallest fragments or isolated occurrences might provide significant new information for the whole group. The Cenozoic fossil record of marine turtles (Pan-Chelonioidea) in South America is scarce with less than 10 published occurrences. The southernmost published record corresponds to a fragmentary and undetermined specimen of pan-dermochelyid (MPEF-PV 565) from the lower Miocene Gaiman Formation in Chubut province, Patagonia, Argentina. However, recent fieldwork has significantly increased the record of marine turtles from northeastern Chubut. The fossil record of pan-dermochelyids was increased with two findings from the Gaiman Formation: one fragmentary consisting of two ossicles (MPEF-PV 11360) and an almost complete carapace with associated postcranium (MPEF-PV 10918). Furthermore, also from the Gaiman Formation, a lower jaw of a pan-cheloniid (MPEF-PV 11382) was found. This group was also recently found in the upper Miocene Puerto Madryn Formation, represented by shell and postcranial remains (MPEF-PV 10929) and a skull (MPEF-PV 2577) coming from Gaiman or Puerto Madryn formations. In summary, we can conclude that: (1) the northeastern Chubut presents the most diverse and abundant record of chelonioid turtles in the Atlantic coast of South America; (2) the reported pan-cheloniid specimens expand the stratigraphic and geographic range of the group in the Atlantic coast in the Neogene; (3) the almost complete carapace of a pan-dermochelyid represents one of the most complete specimens of the group found up-to-date in the world. Thus, these new findings will provide valuable information on the anatomy, taxonomy, and diversity of the marine turtles that once populated the southwestern Atlantic sea and coasts of southern South America.
Fil: Sterli, Juliana. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Museo Paleontológico Egidio Feruglio; Argentina
Fil: Vlachos, Evangelos. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Museo Paleontológico Egidio Feruglio; Argentina
Fil: Cuitiño, José Ignacio. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico. Instituto Patagónico de Geología y Paleontología; Argentina
Fil: Buono, Mónica Romina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico. Instituto Patagónico de Geología y Paleontología; Argentina
Fil: Viglino, Mariana. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico. Instituto Patagónico de Geología y Paleontología; Argentina
9th International Meeting on the Secondary Adaptation of Tetrapods to Life in Water
San Vicente de Tagua Tagua
Chile
Asociación Paleontológica Argentina
Asociación Chilena de Paleontología
description The study of marine turtles is a challenging topic because of the cosmopolitan nature of its fossil record and current distribution. Thus, it might be difficult to study and compare specimens, but sometimes even the smallest fragments or isolated occurrences might provide significant new information for the whole group. The Cenozoic fossil record of marine turtles (Pan-Chelonioidea) in South America is scarce with less than 10 published occurrences. The southernmost published record corresponds to a fragmentary and undetermined specimen of pan-dermochelyid (MPEF-PV 565) from the lower Miocene Gaiman Formation in Chubut province, Patagonia, Argentina. However, recent fieldwork has significantly increased the record of marine turtles from northeastern Chubut. The fossil record of pan-dermochelyids was increased with two findings from the Gaiman Formation: one fragmentary consisting of two ossicles (MPEF-PV 11360) and an almost complete carapace with associated postcranium (MPEF-PV 10918). Furthermore, also from the Gaiman Formation, a lower jaw of a pan-cheloniid (MPEF-PV 11382) was found. This group was also recently found in the upper Miocene Puerto Madryn Formation, represented by shell and postcranial remains (MPEF-PV 10929) and a skull (MPEF-PV 2577) coming from Gaiman or Puerto Madryn formations. In summary, we can conclude that: (1) the northeastern Chubut presents the most diverse and abundant record of chelonioid turtles in the Atlantic coast of South America; (2) the reported pan-cheloniid specimens expand the stratigraphic and geographic range of the group in the Atlantic coast in the Neogene; (3) the almost complete carapace of a pan-dermochelyid represents one of the most complete specimens of the group found up-to-date in the world. Thus, these new findings will provide valuable information on the anatomy, taxonomy, and diversity of the marine turtles that once populated the southwestern Atlantic sea and coasts of southern South America.
publishDate 2021
dc.date.none.fl_str_mv 2021
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info:eu-repo/semantics/conferenceObject
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status_str publishedVersion
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dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/172864
Cenozoic marine turtle record from southern South America: New insights from the Miocene of Patagonia, Argentina; 9th International Meeting on the Secondary Adaptation of Tetrapods to Life in Water; San Vicente de Tagua Tagua; Chile; 2021; 41-41
CONICET Digital
CONICET
url http://hdl.handle.net/11336/172864
identifier_str_mv Cenozoic marine turtle record from southern South America: New insights from the Miocene of Patagonia, Argentina; 9th International Meeting on the Secondary Adaptation of Tetrapods to Life in Water; San Vicente de Tagua Tagua; Chile; 2021; 41-41
CONICET Digital
CONICET
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dc.coverage.none.fl_str_mv Internacional
dc.publisher.none.fl_str_mv Asociación Chilena de Paleontología
publisher.none.fl_str_mv Asociación Chilena de Paleontología
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