New insights into the mammalian association from the Huayquerías and Tunuyán formations (Late Miocene-Pliocene): enamel structure in mesotheriids

Autores
Cristo Omar Romano; Vieytes, Emma Carolina; Esperanza Cerdeño; Forasiepi, Analia Marta
Año de publicación
2019
Idioma
inglés
Tipo de recurso
documento de conferencia
Estado
versión publicada
Descripción
Systematic fieldwork initiated in 2013 in Huayquerías del Este (Mendoza, Argentina), in the Huayquerías and Tunuyán formations (Late Miocene - Pliocene), resulted in more than 800 mammal specimens. The ~300m exposed sedimentary sequence is predominantly formed by pale-red sandstones from an alluvial system, associated with aeolian and fluvial deposits, and developed under arid environment. Most of the fossils are mammals, and among them, the majority are notoungulates (40.3%), followed by rodents (38%). Most of the taxa (97.74%; Xenarthra, Notoungulata, Rodentia) have ever-growing (euhypsodont) cheek teeth, while few (1.73%; Litopterna) have high-crowned (protohypsodont) or (0.53%; Didelphidae, Sparassodonta, Procyonidae) brachydont cheek teeth. The Mesotheriinae (Mesotheriidae, Notoungulata) are medium-sized native ungulates characterized by euhypsodont cheek teeth with enamel principally distributed in the labial and lingual sides (in the mesial and distal surfaces, the enamel layer is very thin or absent). We identified two taxa: Pseudotypotherium subinsigne and Thypotheriopsis sp. The p4 and m1 of P. subinsigne (IANIGLA-PV 198) was sectioned for enamel analysis. The enamel-dentine junction (EDJ) is smooth but the outer-enamel surface forms longitudinal ribs, which are larger in the labial surface (maximum enamel thickness, 0.57mm; maximum enamel thickness between ribs, 0.39mm). From the EDJ to the enamel-cementum junction the schmelzmuster is characterized by modified radial enamel, which includes a thick layer of interprismatic matrix, Hunter-Schreger bands (HSB), and radial enamel. The distribution of the ribs predominantly in the labial side of the lower molars (opposite in the upper) agrees with ectental jaw movements as already suggested for mesotheriids. The euhypsodonty, the radial enamel, which is more resistant to abrasion than other enamel types, and the HSB, that provides resistance to crack propagation, perhaps coped with the xerophytic plants of the arid environments that became common in the Late Miocene of South America.
Fil: Cristo Omar Romano. 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: Vieytes, Emma Carolina. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. Departamento Científico Zoología Vertebrados; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata; Argentina
Fil: Esperanza Cerdeño. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mendoza. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales. Provincia de Mendoza. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales. Universidad Nacional de Cuyo. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales; Argentina
Fil: Forasiepi, Analia Marta. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mendoza. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales. Provincia de Mendoza. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales. Universidad Nacional de Cuyo. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales; Argentina
XXXII Jornadas Argentinas de Mastozoología
Puerto Madryn
Argentina
Sociedad Argentina para el Estudio de los Mamíferos
Universidad Nacional de la Patagonia San Juan Bosco
Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Nacional Patagónico
Materia
Esmalte dental
Mesotherinae
Mioceno tardío-Plioceno
Huayquerías del Este
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:11336/249822
Acceder
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network_name_str CONICET Digital (CONICET)
spelling New insights into the mammalian association from the Huayquerías and Tunuyán formations (Late Miocene-Pliocene): enamel structure in mesotheriidsCristo Omar RomanoVieytes, Emma CarolinaEsperanza CerdeñoForasiepi, Analia MartaEsmalte dentalMesotherinaeMioceno tardío-PliocenoHuayquerías del Estehttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1Systematic fieldwork initiated in 2013 in Huayquerías del Este (Mendoza, Argentina), in the Huayquerías and Tunuyán formations (Late Miocene - Pliocene), resulted in more than 800 mammal specimens. The ~300m exposed sedimentary sequence is predominantly formed by pale-red sandstones from an alluvial system, associated with aeolian and fluvial deposits, and developed under arid environment. Most of the fossils are mammals, and among them, the majority are notoungulates (40.3%), followed by rodents (38%). Most of the taxa (97.74%; Xenarthra, Notoungulata, Rodentia) have ever-growing (euhypsodont) cheek teeth, while few (1.73%; Litopterna) have high-crowned (protohypsodont) or (0.53%; Didelphidae, Sparassodonta, Procyonidae) brachydont cheek teeth. The Mesotheriinae (Mesotheriidae, Notoungulata) are medium-sized native ungulates characterized by euhypsodont cheek teeth with enamel principally distributed in the labial and lingual sides (in the mesial and distal surfaces, the enamel layer is very thin or absent). We identified two taxa: Pseudotypotherium subinsigne and Thypotheriopsis sp. The p4 and m1 of P. subinsigne (IANIGLA-PV 198) was sectioned for enamel analysis. The enamel-dentine junction (EDJ) is smooth but the outer-enamel surface forms longitudinal ribs, which are larger in the labial surface (maximum enamel thickness, 0.57mm; maximum enamel thickness between ribs, 0.39mm). From the EDJ to the enamel-cementum junction the schmelzmuster is characterized by modified radial enamel, which includes a thick layer of interprismatic matrix, Hunter-Schreger bands (HSB), and radial enamel. The distribution of the ribs predominantly in the labial side of the lower molars (opposite in the upper) agrees with ectental jaw movements as already suggested for mesotheriids. The euhypsodonty, the radial enamel, which is more resistant to abrasion than other enamel types, and the HSB, that provides resistance to crack propagation, perhaps coped with the xerophytic plants of the arid environments that became common in the Late Miocene of South America.Fil: Cristo Omar Romano. 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: Vieytes, Emma Carolina. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. Departamento Científico Zoología Vertebrados; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata; ArgentinaFil: Esperanza Cerdeño. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mendoza. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales. Provincia de Mendoza. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales. Universidad Nacional de Cuyo. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales; ArgentinaFil: Forasiepi, Analia Marta. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mendoza. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales. Provincia de Mendoza. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales. Universidad Nacional de Cuyo. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales; ArgentinaXXXII Jornadas Argentinas de MastozoologíaPuerto MadrynArgentinaSociedad Argentina para el Estudio de los MamíferosUniversidad Nacional de la Patagonia San Juan BoscoConsejo Nacional de Investigaciones Científicas y Técnicas. Centro Nacional PatagónicoSociedad Argentina para el Estudio de los Mamíferos2019info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/conferenceObjectJornadaBookhttp://purl.org/coar/resource_type/c_5794info:ar-repo/semantics/documentoDeConferenciaapplication/pdfapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/249822New insights into the mammalian association from the Huayquerías and Tunuyán formations (Late Miocene-Pliocene): enamel structure in mesotheriids; XXXII Jornadas Argentinas de Mastozoología; Puerto Madryn; Argentina; 2019; 53-53CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://www.sarem.org.ar/jams/xxxii-jam/Nacionalinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-22T11:20:00Zoai:ri.conicet.gov.ar:11336/249822instacron: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:34982025-10-22 11:20:00.856CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv New insights into the mammalian association from the Huayquerías and Tunuyán formations (Late Miocene-Pliocene): enamel structure in mesotheriids
title New insights into the mammalian association from the Huayquerías and Tunuyán formations (Late Miocene-Pliocene): enamel structure in mesotheriids
spellingShingle New insights into the mammalian association from the Huayquerías and Tunuyán formations (Late Miocene-Pliocene): enamel structure in mesotheriids
Cristo Omar Romano
Esmalte dental
Mesotherinae
Mioceno tardío-Plioceno
Huayquerías del Este
title_short New insights into the mammalian association from the Huayquerías and Tunuyán formations (Late Miocene-Pliocene): enamel structure in mesotheriids
title_full New insights into the mammalian association from the Huayquerías and Tunuyán formations (Late Miocene-Pliocene): enamel structure in mesotheriids
title_fullStr New insights into the mammalian association from the Huayquerías and Tunuyán formations (Late Miocene-Pliocene): enamel structure in mesotheriids
title_full_unstemmed New insights into the mammalian association from the Huayquerías and Tunuyán formations (Late Miocene-Pliocene): enamel structure in mesotheriids
title_sort New insights into the mammalian association from the Huayquerías and Tunuyán formations (Late Miocene-Pliocene): enamel structure in mesotheriids
dc.creator.none.fl_str_mv Cristo Omar Romano
Vieytes, Emma Carolina
Esperanza Cerdeño
Forasiepi, Analia Marta
author Cristo Omar Romano
author_facet Cristo Omar Romano
Vieytes, Emma Carolina
Esperanza Cerdeño
Forasiepi, Analia Marta
author_role author
author2 Vieytes, Emma Carolina
Esperanza Cerdeño
Forasiepi, Analia Marta
author2_role author
author
author
dc.subject.none.fl_str_mv Esmalte dental
Mesotherinae
Mioceno tardío-Plioceno
Huayquerías del Este
topic Esmalte dental
Mesotherinae
Mioceno tardío-Plioceno
Huayquerías del Este
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.5
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Systematic fieldwork initiated in 2013 in Huayquerías del Este (Mendoza, Argentina), in the Huayquerías and Tunuyán formations (Late Miocene - Pliocene), resulted in more than 800 mammal specimens. The ~300m exposed sedimentary sequence is predominantly formed by pale-red sandstones from an alluvial system, associated with aeolian and fluvial deposits, and developed under arid environment. Most of the fossils are mammals, and among them, the majority are notoungulates (40.3%), followed by rodents (38%). Most of the taxa (97.74%; Xenarthra, Notoungulata, Rodentia) have ever-growing (euhypsodont) cheek teeth, while few (1.73%; Litopterna) have high-crowned (protohypsodont) or (0.53%; Didelphidae, Sparassodonta, Procyonidae) brachydont cheek teeth. The Mesotheriinae (Mesotheriidae, Notoungulata) are medium-sized native ungulates characterized by euhypsodont cheek teeth with enamel principally distributed in the labial and lingual sides (in the mesial and distal surfaces, the enamel layer is very thin or absent). We identified two taxa: Pseudotypotherium subinsigne and Thypotheriopsis sp. The p4 and m1 of P. subinsigne (IANIGLA-PV 198) was sectioned for enamel analysis. The enamel-dentine junction (EDJ) is smooth but the outer-enamel surface forms longitudinal ribs, which are larger in the labial surface (maximum enamel thickness, 0.57mm; maximum enamel thickness between ribs, 0.39mm). From the EDJ to the enamel-cementum junction the schmelzmuster is characterized by modified radial enamel, which includes a thick layer of interprismatic matrix, Hunter-Schreger bands (HSB), and radial enamel. The distribution of the ribs predominantly in the labial side of the lower molars (opposite in the upper) agrees with ectental jaw movements as already suggested for mesotheriids. The euhypsodonty, the radial enamel, which is more resistant to abrasion than other enamel types, and the HSB, that provides resistance to crack propagation, perhaps coped with the xerophytic plants of the arid environments that became common in the Late Miocene of South America.
Fil: Cristo Omar Romano. 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: Vieytes, Emma Carolina. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. Departamento Científico Zoología Vertebrados; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata; Argentina
Fil: Esperanza Cerdeño. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mendoza. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales. Provincia de Mendoza. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales. Universidad Nacional de Cuyo. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales; Argentina
Fil: Forasiepi, Analia Marta. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mendoza. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales. Provincia de Mendoza. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales. Universidad Nacional de Cuyo. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales; Argentina
XXXII Jornadas Argentinas de Mastozoología
Puerto Madryn
Argentina
Sociedad Argentina para el Estudio de los Mamíferos
Universidad Nacional de la Patagonia San Juan Bosco
Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Nacional Patagónico
description Systematic fieldwork initiated in 2013 in Huayquerías del Este (Mendoza, Argentina), in the Huayquerías and Tunuyán formations (Late Miocene - Pliocene), resulted in more than 800 mammal specimens. The ~300m exposed sedimentary sequence is predominantly formed by pale-red sandstones from an alluvial system, associated with aeolian and fluvial deposits, and developed under arid environment. Most of the fossils are mammals, and among them, the majority are notoungulates (40.3%), followed by rodents (38%). Most of the taxa (97.74%; Xenarthra, Notoungulata, Rodentia) have ever-growing (euhypsodont) cheek teeth, while few (1.73%; Litopterna) have high-crowned (protohypsodont) or (0.53%; Didelphidae, Sparassodonta, Procyonidae) brachydont cheek teeth. The Mesotheriinae (Mesotheriidae, Notoungulata) are medium-sized native ungulates characterized by euhypsodont cheek teeth with enamel principally distributed in the labial and lingual sides (in the mesial and distal surfaces, the enamel layer is very thin or absent). We identified two taxa: Pseudotypotherium subinsigne and Thypotheriopsis sp. The p4 and m1 of P. subinsigne (IANIGLA-PV 198) was sectioned for enamel analysis. The enamel-dentine junction (EDJ) is smooth but the outer-enamel surface forms longitudinal ribs, which are larger in the labial surface (maximum enamel thickness, 0.57mm; maximum enamel thickness between ribs, 0.39mm). From the EDJ to the enamel-cementum junction the schmelzmuster is characterized by modified radial enamel, which includes a thick layer of interprismatic matrix, Hunter-Schreger bands (HSB), and radial enamel. The distribution of the ribs predominantly in the labial side of the lower molars (opposite in the upper) agrees with ectental jaw movements as already suggested for mesotheriids. The euhypsodonty, the radial enamel, which is more resistant to abrasion than other enamel types, and the HSB, that provides resistance to crack propagation, perhaps coped with the xerophytic plants of the arid environments that became common in the Late Miocene of South America.
publishDate 2019
dc.date.none.fl_str_mv 2019
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status_str publishedVersion
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dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/249822
New insights into the mammalian association from the Huayquerías and Tunuyán formations (Late Miocene-Pliocene): enamel structure in mesotheriids; XXXII Jornadas Argentinas de Mastozoología; Puerto Madryn; Argentina; 2019; 53-53
CONICET Digital
CONICET
url http://hdl.handle.net/11336/249822
identifier_str_mv New insights into the mammalian association from the Huayquerías and Tunuyán formations (Late Miocene-Pliocene): enamel structure in mesotheriids; XXXII Jornadas Argentinas de Mastozoología; Puerto Madryn; Argentina; 2019; 53-53
CONICET Digital
CONICET
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dc.publisher.none.fl_str_mv Sociedad Argentina para el Estudio de los Mamíferos
publisher.none.fl_str_mv Sociedad Argentina para el Estudio de los Mamíferos
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