New remains and new insights on the Gondwanan meiolaniform turtle Chubutemys copelloi from the Lower Cretaceous of Patagonia, Argentina

Autores
Sterli, Juliana; de la Fuente, Marcelo Saul; Umazano, Aldo Martin
Año de publicación
2015
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
New cranial and postcranial remains of the Gondwanan meiolaniform turtle Chubutemys copelloi Gaffney, Rich, Vickers-Rich, Constantine, Vacca and Kool 2007 from the Lower Cretaceous Puesto La Paloma Member of the Cerro Barcino Formation (Chubut province, Patagonia, Argentina) are presented, described, and compared in this contribution. Carapace and plastral remains, pectoral and pelvic girdle, cervical and thoracic vertebrae, and the left maxilla and jugal are the new recovered elements from C. copelloi. These new remains were found in 2008 in Turtle Town locality, the same site where the holotype and referred specimens of C. copelloi had been found in 1997. The facies analysis of the sedimentary succession in Turtle Town and surrounding areas suggests a paleoenvironment constituted by a broad alluvial plain with influx of volcanic ash-falls, whose deposits were disturbed by pedogenesis or reworked by current flows that supplied water and sediment in ponded areas. The presence of a very thin shell, broad vertebrals (broader than pleurals), the presence of a shallow nuchal notch with the vertebral 1 almost reaching the anterior border of the carapace, the presence of costo-peripheral fontanelles, and the presence of an ectepicondylar canal in the humerus, are the most notable features provided by the new remains. A cladistic analysis has been performed to test the phylogenetic position of C. copelloi. This phylogeny corroborates the basal position of C. copelloi among Meiolaniformes. The plausible phylogenetic relationships of the clade Meiolaniidae with other Gondwanan (e.g., Otwayemys cunicularius Gaffney, Kool, Brinkman, Rich, and Vickers-Rich 1998) or Laurasian Lower Cretaceous taxa (e.g., sinochelyids) are also discussed in this contribution. Taxa included in Meiolaniformes have been mainly found in Gondwana and as the most basal taxon was found in Patagonia, paleobiogeographic studies suggest this clade originated in South America. Due to the basal position of C. copelloi among Meiolaniformes the discovery of more and previously unknown remains of this species sheds light on the origin and early evolution of this curious clade.
Fil: Sterli, Juliana. Museo Paleontológico Egidio Feruglio; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: de la Fuente, Marcelo Saul. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mendoza. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales. Museo de Historia Natural de San Rafael - Ianigla | Provincia de Mendoza. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales. Museo de Historia Natural de San Rafael - Ianigla | Universidad Nacional de Cuyo. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales. Museo de Historia Natural de San Rafael - Ianigla; Argentina
Fil: Umazano, Aldo Martin. Universidad Nacional de La Pampa. Facultad de Ciencias Exactas y Naturales; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Materia
Meiolaniformes
Cerro Barcino Formation
Paleoenvironment
Gondwana
Turtle Ecolution
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:11336/19701
Acceder
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repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling New remains and new insights on the Gondwanan meiolaniform turtle Chubutemys copelloi from the Lower Cretaceous of Patagonia, ArgentinaSterli, Julianade la Fuente, Marcelo SaulUmazano, Aldo MartinMeiolaniformesCerro Barcino FormationPaleoenvironmentGondwanaTurtle Ecolutionhttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1New cranial and postcranial remains of the Gondwanan meiolaniform turtle Chubutemys copelloi Gaffney, Rich, Vickers-Rich, Constantine, Vacca and Kool 2007 from the Lower Cretaceous Puesto La Paloma Member of the Cerro Barcino Formation (Chubut province, Patagonia, Argentina) are presented, described, and compared in this contribution. Carapace and plastral remains, pectoral and pelvic girdle, cervical and thoracic vertebrae, and the left maxilla and jugal are the new recovered elements from C. copelloi. These new remains were found in 2008 in Turtle Town locality, the same site where the holotype and referred specimens of C. copelloi had been found in 1997. The facies analysis of the sedimentary succession in Turtle Town and surrounding areas suggests a paleoenvironment constituted by a broad alluvial plain with influx of volcanic ash-falls, whose deposits were disturbed by pedogenesis or reworked by current flows that supplied water and sediment in ponded areas. The presence of a very thin shell, broad vertebrals (broader than pleurals), the presence of a shallow nuchal notch with the vertebral 1 almost reaching the anterior border of the carapace, the presence of costo-peripheral fontanelles, and the presence of an ectepicondylar canal in the humerus, are the most notable features provided by the new remains. A cladistic analysis has been performed to test the phylogenetic position of C. copelloi. This phylogeny corroborates the basal position of C. copelloi among Meiolaniformes. The plausible phylogenetic relationships of the clade Meiolaniidae with other Gondwanan (e.g., Otwayemys cunicularius Gaffney, Kool, Brinkman, Rich, and Vickers-Rich 1998) or Laurasian Lower Cretaceous taxa (e.g., sinochelyids) are also discussed in this contribution. Taxa included in Meiolaniformes have been mainly found in Gondwana and as the most basal taxon was found in Patagonia, paleobiogeographic studies suggest this clade originated in South America. Due to the basal position of C. copelloi among Meiolaniformes the discovery of more and previously unknown remains of this species sheds light on the origin and early evolution of this curious clade.Fil: Sterli, Juliana. Museo Paleontológico Egidio Feruglio; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: de la Fuente, Marcelo Saul. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mendoza. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales. Museo de Historia Natural de San Rafael - Ianigla | Provincia de Mendoza. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales. Museo de Historia Natural de San Rafael - Ianigla | Universidad Nacional de Cuyo. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales. Museo de Historia Natural de San Rafael - Ianigla; ArgentinaFil: Umazano, Aldo Martin. Universidad Nacional de La Pampa. Facultad de Ciencias Exactas y Naturales; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaElsevier Science2015-04info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/19701Sterli, Juliana; de la Fuente, Marcelo Saul; Umazano, Aldo Martin; New remains and new insights on the Gondwanan meiolaniform turtle Chubutemys copelloi from the Lower Cretaceous of Patagonia, Argentina; Elsevier Science; Gondwana Research; 27; 3; 4-2015; 978-9941342-937XCONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1016/j.gr.2013.08.016info:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S1342937X13002931info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-03T10:05:58Zoai:ri.conicet.gov.ar:11336/19701instacron: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 10:05:58.706CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv New remains and new insights on the Gondwanan meiolaniform turtle Chubutemys copelloi from the Lower Cretaceous of Patagonia, Argentina
title New remains and new insights on the Gondwanan meiolaniform turtle Chubutemys copelloi from the Lower Cretaceous of Patagonia, Argentina
spellingShingle New remains and new insights on the Gondwanan meiolaniform turtle Chubutemys copelloi from the Lower Cretaceous of Patagonia, Argentina
Sterli, Juliana
Meiolaniformes
Cerro Barcino Formation
Paleoenvironment
Gondwana
Turtle Ecolution
title_short New remains and new insights on the Gondwanan meiolaniform turtle Chubutemys copelloi from the Lower Cretaceous of Patagonia, Argentina
title_full New remains and new insights on the Gondwanan meiolaniform turtle Chubutemys copelloi from the Lower Cretaceous of Patagonia, Argentina
title_fullStr New remains and new insights on the Gondwanan meiolaniform turtle Chubutemys copelloi from the Lower Cretaceous of Patagonia, Argentina
title_full_unstemmed New remains and new insights on the Gondwanan meiolaniform turtle Chubutemys copelloi from the Lower Cretaceous of Patagonia, Argentina
title_sort New remains and new insights on the Gondwanan meiolaniform turtle Chubutemys copelloi from the Lower Cretaceous of Patagonia, Argentina
dc.creator.none.fl_str_mv Sterli, Juliana
de la Fuente, Marcelo Saul
Umazano, Aldo Martin
author Sterli, Juliana
author_facet Sterli, Juliana
de la Fuente, Marcelo Saul
Umazano, Aldo Martin
author_role author
author2 de la Fuente, Marcelo Saul
Umazano, Aldo Martin
author2_role author
author
dc.subject.none.fl_str_mv Meiolaniformes
Cerro Barcino Formation
Paleoenvironment
Gondwana
Turtle Ecolution
topic Meiolaniformes
Cerro Barcino Formation
Paleoenvironment
Gondwana
Turtle Ecolution
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.5
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv New cranial and postcranial remains of the Gondwanan meiolaniform turtle Chubutemys copelloi Gaffney, Rich, Vickers-Rich, Constantine, Vacca and Kool 2007 from the Lower Cretaceous Puesto La Paloma Member of the Cerro Barcino Formation (Chubut province, Patagonia, Argentina) are presented, described, and compared in this contribution. Carapace and plastral remains, pectoral and pelvic girdle, cervical and thoracic vertebrae, and the left maxilla and jugal are the new recovered elements from C. copelloi. These new remains were found in 2008 in Turtle Town locality, the same site where the holotype and referred specimens of C. copelloi had been found in 1997. The facies analysis of the sedimentary succession in Turtle Town and surrounding areas suggests a paleoenvironment constituted by a broad alluvial plain with influx of volcanic ash-falls, whose deposits were disturbed by pedogenesis or reworked by current flows that supplied water and sediment in ponded areas. The presence of a very thin shell, broad vertebrals (broader than pleurals), the presence of a shallow nuchal notch with the vertebral 1 almost reaching the anterior border of the carapace, the presence of costo-peripheral fontanelles, and the presence of an ectepicondylar canal in the humerus, are the most notable features provided by the new remains. A cladistic analysis has been performed to test the phylogenetic position of C. copelloi. This phylogeny corroborates the basal position of C. copelloi among Meiolaniformes. The plausible phylogenetic relationships of the clade Meiolaniidae with other Gondwanan (e.g., Otwayemys cunicularius Gaffney, Kool, Brinkman, Rich, and Vickers-Rich 1998) or Laurasian Lower Cretaceous taxa (e.g., sinochelyids) are also discussed in this contribution. Taxa included in Meiolaniformes have been mainly found in Gondwana and as the most basal taxon was found in Patagonia, paleobiogeographic studies suggest this clade originated in South America. Due to the basal position of C. copelloi among Meiolaniformes the discovery of more and previously unknown remains of this species sheds light on the origin and early evolution of this curious clade.
Fil: Sterli, Juliana. Museo Paleontológico Egidio Feruglio; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: de la Fuente, Marcelo Saul. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mendoza. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales. Museo de Historia Natural de San Rafael - Ianigla | Provincia de Mendoza. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales. Museo de Historia Natural de San Rafael - Ianigla | Universidad Nacional de Cuyo. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales. Museo de Historia Natural de San Rafael - Ianigla; Argentina
Fil: Umazano, Aldo Martin. Universidad Nacional de La Pampa. Facultad de Ciencias Exactas y Naturales; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
description New cranial and postcranial remains of the Gondwanan meiolaniform turtle Chubutemys copelloi Gaffney, Rich, Vickers-Rich, Constantine, Vacca and Kool 2007 from the Lower Cretaceous Puesto La Paloma Member of the Cerro Barcino Formation (Chubut province, Patagonia, Argentina) are presented, described, and compared in this contribution. Carapace and plastral remains, pectoral and pelvic girdle, cervical and thoracic vertebrae, and the left maxilla and jugal are the new recovered elements from C. copelloi. These new remains were found in 2008 in Turtle Town locality, the same site where the holotype and referred specimens of C. copelloi had been found in 1997. The facies analysis of the sedimentary succession in Turtle Town and surrounding areas suggests a paleoenvironment constituted by a broad alluvial plain with influx of volcanic ash-falls, whose deposits were disturbed by pedogenesis or reworked by current flows that supplied water and sediment in ponded areas. The presence of a very thin shell, broad vertebrals (broader than pleurals), the presence of a shallow nuchal notch with the vertebral 1 almost reaching the anterior border of the carapace, the presence of costo-peripheral fontanelles, and the presence of an ectepicondylar canal in the humerus, are the most notable features provided by the new remains. A cladistic analysis has been performed to test the phylogenetic position of C. copelloi. This phylogeny corroborates the basal position of C. copelloi among Meiolaniformes. The plausible phylogenetic relationships of the clade Meiolaniidae with other Gondwanan (e.g., Otwayemys cunicularius Gaffney, Kool, Brinkman, Rich, and Vickers-Rich 1998) or Laurasian Lower Cretaceous taxa (e.g., sinochelyids) are also discussed in this contribution. Taxa included in Meiolaniformes have been mainly found in Gondwana and as the most basal taxon was found in Patagonia, paleobiogeographic studies suggest this clade originated in South America. Due to the basal position of C. copelloi among Meiolaniformes the discovery of more and previously unknown remains of this species sheds light on the origin and early evolution of this curious clade.
publishDate 2015
dc.date.none.fl_str_mv 2015-04
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/11336/19701
Sterli, Juliana; de la Fuente, Marcelo Saul; Umazano, Aldo Martin; New remains and new insights on the Gondwanan meiolaniform turtle Chubutemys copelloi from the Lower Cretaceous of Patagonia, Argentina; Elsevier Science; Gondwana Research; 27; 3; 4-2015; 978-994
1342-937X
CONICET Digital
CONICET
url http://hdl.handle.net/11336/19701
identifier_str_mv Sterli, Juliana; de la Fuente, Marcelo Saul; Umazano, Aldo Martin; New remains and new insights on the Gondwanan meiolaniform turtle Chubutemys copelloi from the Lower Cretaceous of Patagonia, Argentina; Elsevier Science; Gondwana Research; 27; 3; 4-2015; 978-994
1342-937X
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
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info:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S1342937X13002931
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dc.format.none.fl_str_mv application/pdf
application/pdf
application/pdf
application/pdf
dc.publisher.none.fl_str_mv Elsevier Science
publisher.none.fl_str_mv Elsevier Science
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
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reponame_str CONICET Digital (CONICET)
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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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