Evolutionary pattern of the genus Cercomys and its biochronological implications

Autores
Piñero García, Pedro; Verzi, Diego Hector; Olivares, Adriana Itati; Tomassini, Rodrigo Leandro; Montalvo, Claudia
Año de publicación
2020
Idioma
español castellano
Tipo de recurso
documento de conferencia
Estado
versión publicada
Descripción
Cercomys Pascual, 1967 is a late Miocene stem Octodontidae (Rodentia) whose systematic status and taxonomic diversity remains to be reviewed. We present the results of a systematic study of 75 specimens of this genus from 15 localities of central and western Argentina. Although the molar morphology is quite conservative, the comparison among samples shows variation in size. Results of quali-quantitative analyses (variance analysis, Kruskal-Wallis, discriminant analysis) suggest the recognition of four species. The smallest species (Cercomys sp. A) is recorded in the lower late Miocene localities of Arroyo Chasicó (ca. 9.23 Ma) and Cerro La Bota (Cerro Azul Formation, central Argentina) and Ullúm (Loma de Las Tapias Formation, western Argentina). The largest species (Cercomys sp. D) is recorded in the latest Miocene–earliest Pliocene of the Cantera Vialidad locality (ca. 5.33 Ma; Cerro Azul Formation) associated to Xenodontomys ellipticus (Ctenomyidae, Rodentia). Cercomys sp. B and Cercomys sp. C are intermediate in size between the two latter, which is consistent with biochronological evidence of the sites where they are found. We interpret the Cercomys species as members of a single, undivided lineage with directional evolution marked by size increase from the late Miocene to the Mio-Pliocene transition (ca. four million years of recorded evolution). The polarity of this directional change in Cercomys is congruent with that detected for other octodontoid lineages from the same deposits, such as Chasichimys-Xenodontomys, Neophanomys (Octodontidae) and Reigechimys (Echimyidae). This pattern allows refining biochronological and biostratigraphic interpretations for the late Neogene of southern South America. In particular, Cercomys sp. D and X. ellipticus are key species for identifying the Mio-Pliocene boundary in the continental record of central and western Argentina.
Fil: Piñero García, Pedro. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata; Argentina. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. División Zoología de Vertebrados. Sección de Mastozoología; Argentina
Fil: Verzi, Diego Hector. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata; Argentina. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. División Zoología de Vertebrados. Sección de Mastozoología; Argentina
Fil: Olivares, Adriana Itati. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. División Zoología de Vertebrados. Sección de Mastozoología; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata; Argentina
Fil: Tomassini, Rodrigo Leandro. Universidad Nacional del Sur. Departamento de Geología; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto Geológico del Sur. Universidad Nacional del Sur. Departamento de Geología. Instituto Geológico del Sur; Argentina
Fil: Montalvo, Claudia. Universidad Nacional de la Pampa. Facultad de Ciencias Exactas y Naturales. Departamento de Ciencias Naturales; Argentina
2nd Palaeontological Virtual Congress
Congreso Virtual
España
Palaeontological Virtual Congress
Materia
Octodontidae
Late Miocene
South America
Anagenesis
Biostratigrahy
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:11336/273019
Acceder
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network_name_str CONICET Digital (CONICET)
spelling Evolutionary pattern of the genus Cercomys and its biochronological implicationsPiñero García, PedroVerzi, Diego HectorOlivares, Adriana ItatiTomassini, Rodrigo LeandroMontalvo, ClaudiaOctodontidaeLate MioceneSouth AmericaAnagenesisBiostratigrahyhttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1Cercomys Pascual, 1967 is a late Miocene stem Octodontidae (Rodentia) whose systematic status and taxonomic diversity remains to be reviewed. We present the results of a systematic study of 75 specimens of this genus from 15 localities of central and western Argentina. Although the molar morphology is quite conservative, the comparison among samples shows variation in size. Results of quali-quantitative analyses (variance analysis, Kruskal-Wallis, discriminant analysis) suggest the recognition of four species. The smallest species (Cercomys sp. A) is recorded in the lower late Miocene localities of Arroyo Chasicó (ca. 9.23 Ma) and Cerro La Bota (Cerro Azul Formation, central Argentina) and Ullúm (Loma de Las Tapias Formation, western Argentina). The largest species (Cercomys sp. D) is recorded in the latest Miocene–earliest Pliocene of the Cantera Vialidad locality (ca. 5.33 Ma; Cerro Azul Formation) associated to Xenodontomys ellipticus (Ctenomyidae, Rodentia). Cercomys sp. B and Cercomys sp. C are intermediate in size between the two latter, which is consistent with biochronological evidence of the sites where they are found. We interpret the Cercomys species as members of a single, undivided lineage with directional evolution marked by size increase from the late Miocene to the Mio-Pliocene transition (ca. four million years of recorded evolution). The polarity of this directional change in Cercomys is congruent with that detected for other octodontoid lineages from the same deposits, such as Chasichimys-Xenodontomys, Neophanomys (Octodontidae) and Reigechimys (Echimyidae). This pattern allows refining biochronological and biostratigraphic interpretations for the late Neogene of southern South America. In particular, Cercomys sp. D and X. ellipticus are key species for identifying the Mio-Pliocene boundary in the continental record of central and western Argentina.Fil: Piñero García, Pedro. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata; Argentina. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. División Zoología de Vertebrados. Sección de Mastozoología; ArgentinaFil: Verzi, Diego Hector. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata; Argentina. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. División Zoología de Vertebrados. Sección de Mastozoología; ArgentinaFil: Olivares, Adriana Itati. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. División Zoología de Vertebrados. Sección de Mastozoología; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata; ArgentinaFil: Tomassini, Rodrigo Leandro. Universidad Nacional del Sur. Departamento de Geología; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto Geológico del Sur. Universidad Nacional del Sur. Departamento de Geología. Instituto Geológico del Sur; ArgentinaFil: Montalvo, Claudia. Universidad Nacional de la Pampa. Facultad de Ciencias Exactas y Naturales. Departamento de Ciencias Naturales; Argentina2nd Palaeontological Virtual CongressCongreso VirtualEspañaPalaeontological Virtual CongressPalaeontological Virtual Congress2020info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/conferenceObjectCongresoBookhttp://purl.org/coar/resource_type/c_5794info:ar-repo/semantics/documentoDeConferenciaapplication/pdfapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/273019Evolutionary pattern of the genus Cercomys and its biochronological implications; 2nd Palaeontological Virtual Congress; Congreso Virtual; España; 2020; 191-191978-84-09-20283-6CONICET DigitalCONICETspainfo:eu-repo/semantics/altIdentifier/url/https://www.uv.es/palaeovc/Documentos%20/2nd%20PVC/2nd_PVC_Book_of_Abstracts.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 Técnicas2025-10-22T11:24:54Zoai:ri.conicet.gov.ar:11336/273019instacron: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 11:24:54.908CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Evolutionary pattern of the genus Cercomys and its biochronological implications
title Evolutionary pattern of the genus Cercomys and its biochronological implications
spellingShingle Evolutionary pattern of the genus Cercomys and its biochronological implications
Piñero García, Pedro
Octodontidae
Late Miocene
South America
Anagenesis
Biostratigrahy
title_short Evolutionary pattern of the genus Cercomys and its biochronological implications
title_full Evolutionary pattern of the genus Cercomys and its biochronological implications
title_fullStr Evolutionary pattern of the genus Cercomys and its biochronological implications
title_full_unstemmed Evolutionary pattern of the genus Cercomys and its biochronological implications
title_sort Evolutionary pattern of the genus Cercomys and its biochronological implications
dc.creator.none.fl_str_mv Piñero García, Pedro
Verzi, Diego Hector
Olivares, Adriana Itati
Tomassini, Rodrigo Leandro
Montalvo, Claudia
author Piñero García, Pedro
author_facet Piñero García, Pedro
Verzi, Diego Hector
Olivares, Adriana Itati
Tomassini, Rodrigo Leandro
Montalvo, Claudia
author_role author
author2 Verzi, Diego Hector
Olivares, Adriana Itati
Tomassini, Rodrigo Leandro
Montalvo, Claudia
author2_role author
author
author
author
dc.subject.none.fl_str_mv Octodontidae
Late Miocene
South America
Anagenesis
Biostratigrahy
topic Octodontidae
Late Miocene
South America
Anagenesis
Biostratigrahy
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.5
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Cercomys Pascual, 1967 is a late Miocene stem Octodontidae (Rodentia) whose systematic status and taxonomic diversity remains to be reviewed. We present the results of a systematic study of 75 specimens of this genus from 15 localities of central and western Argentina. Although the molar morphology is quite conservative, the comparison among samples shows variation in size. Results of quali-quantitative analyses (variance analysis, Kruskal-Wallis, discriminant analysis) suggest the recognition of four species. The smallest species (Cercomys sp. A) is recorded in the lower late Miocene localities of Arroyo Chasicó (ca. 9.23 Ma) and Cerro La Bota (Cerro Azul Formation, central Argentina) and Ullúm (Loma de Las Tapias Formation, western Argentina). The largest species (Cercomys sp. D) is recorded in the latest Miocene–earliest Pliocene of the Cantera Vialidad locality (ca. 5.33 Ma; Cerro Azul Formation) associated to Xenodontomys ellipticus (Ctenomyidae, Rodentia). Cercomys sp. B and Cercomys sp. C are intermediate in size between the two latter, which is consistent with biochronological evidence of the sites where they are found. We interpret the Cercomys species as members of a single, undivided lineage with directional evolution marked by size increase from the late Miocene to the Mio-Pliocene transition (ca. four million years of recorded evolution). The polarity of this directional change in Cercomys is congruent with that detected for other octodontoid lineages from the same deposits, such as Chasichimys-Xenodontomys, Neophanomys (Octodontidae) and Reigechimys (Echimyidae). This pattern allows refining biochronological and biostratigraphic interpretations for the late Neogene of southern South America. In particular, Cercomys sp. D and X. ellipticus are key species for identifying the Mio-Pliocene boundary in the continental record of central and western Argentina.
Fil: Piñero García, Pedro. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata; Argentina. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. División Zoología de Vertebrados. Sección de Mastozoología; Argentina
Fil: Verzi, Diego Hector. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata; Argentina. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. División Zoología de Vertebrados. Sección de Mastozoología; Argentina
Fil: Olivares, Adriana Itati. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. División Zoología de Vertebrados. Sección de Mastozoología; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata; Argentina
Fil: Tomassini, Rodrigo Leandro. Universidad Nacional del Sur. Departamento de Geología; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto Geológico del Sur. Universidad Nacional del Sur. Departamento de Geología. Instituto Geológico del Sur; Argentina
Fil: Montalvo, Claudia. Universidad Nacional de la Pampa. Facultad de Ciencias Exactas y Naturales. Departamento de Ciencias Naturales; Argentina
2nd Palaeontological Virtual Congress
Congreso Virtual
España
Palaeontological Virtual Congress
description Cercomys Pascual, 1967 is a late Miocene stem Octodontidae (Rodentia) whose systematic status and taxonomic diversity remains to be reviewed. We present the results of a systematic study of 75 specimens of this genus from 15 localities of central and western Argentina. Although the molar morphology is quite conservative, the comparison among samples shows variation in size. Results of quali-quantitative analyses (variance analysis, Kruskal-Wallis, discriminant analysis) suggest the recognition of four species. The smallest species (Cercomys sp. A) is recorded in the lower late Miocene localities of Arroyo Chasicó (ca. 9.23 Ma) and Cerro La Bota (Cerro Azul Formation, central Argentina) and Ullúm (Loma de Las Tapias Formation, western Argentina). The largest species (Cercomys sp. D) is recorded in the latest Miocene–earliest Pliocene of the Cantera Vialidad locality (ca. 5.33 Ma; Cerro Azul Formation) associated to Xenodontomys ellipticus (Ctenomyidae, Rodentia). Cercomys sp. B and Cercomys sp. C are intermediate in size between the two latter, which is consistent with biochronological evidence of the sites where they are found. We interpret the Cercomys species as members of a single, undivided lineage with directional evolution marked by size increase from the late Miocene to the Mio-Pliocene transition (ca. four million years of recorded evolution). The polarity of this directional change in Cercomys is congruent with that detected for other octodontoid lineages from the same deposits, such as Chasichimys-Xenodontomys, Neophanomys (Octodontidae) and Reigechimys (Echimyidae). This pattern allows refining biochronological and biostratigraphic interpretations for the late Neogene of southern South America. In particular, Cercomys sp. D and X. ellipticus are key species for identifying the Mio-Pliocene boundary in the continental record of central and western Argentina.
publishDate 2020
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dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/273019
Evolutionary pattern of the genus Cercomys and its biochronological implications; 2nd Palaeontological Virtual Congress; Congreso Virtual; España; 2020; 191-191
978-84-09-20283-6
CONICET Digital
CONICET
url http://hdl.handle.net/11336/273019
identifier_str_mv Evolutionary pattern of the genus Cercomys and its biochronological implications; 2nd Palaeontological Virtual Congress; Congreso Virtual; España; 2020; 191-191
978-84-09-20283-6
CONICET Digital
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