A new Pigmy Armadillo from the late Miocene (Chasicoan Stage/Age) of San Juan Province (Argentina)

Autores
Barasoain Goñi, Daniel; Contreras, Victor Hugo; Tomassini, Rodrigo Leandro; Zurita, Alfredo Eduardo
Año de publicación
2019
Idioma
inglés
Tipo de recurso
documento de conferencia
Estado
versión publicada
Descripción
Zaedyus pichiy Desmarest, 1804, referred as pygmy or dwarf armadillo, is a Euphractinae (Xenarthra Cingulata) widely distributed in central-southern Argentina. The fossil record of this genus is well known since the Early-Middle Pleistocene. Prozaedyus Ameghino, 1891 was recognized remarking the evident morphological resemblance of the dorsal carapace respect to Zaedyus. From a phylogenetic point of view, Prozaedyus has been interpreted as an early diverging Euphractinae, restricted to the Late Oligocene and Early Miocene levels (Deseadan to Friasian SALMAs). We report here a new and particular specimen (MSJ-317) coming from the Late Miocene (Loma de Las Tapias Formation, Chasicoan Stage/Age) of the Province of San Juan, which represents a new species of Prozaedyus. The specimen includes an almost complete skull with complete dental series, some articulated fragments of the dorsal carapace and several isolated fixed and mobile osteoderms. Dental formula, ornamentation pattern of fixed osteoderms and presence of small foramina in the posterior and lateral margins of osteoderms are some of the characters that allow its inclusion within the genus Prozaedyus. Differences with known species include size (ca. 40% smaller), cranial characters (e.g., position of theinfraorbital foramen, skull bones sutures, morphology of the occipital condyles), and ornamentation pattern of mobile osteoderms. This record extends considerably the biochron of the genus up to Late Miocene. The phylogenetic analysis carried out supportits relationas a sister group of the other Prozaedyus species, and also reveals an ancient divergence of the analyzed lineage that occurs before that of the Late Oligocene-Early middle Miocene forms.
Fil: Barasoain Goñi, Daniel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Nordeste. Centro de Ecología Aplicada del Litoral. Universidad Nacional del Nordeste. Centro de Ecología Aplicada del Litoral; Argentina. Universidad Nacional del Nordeste. Facultad de Ciencias Exactas y Naturales y Agrimensura; Argentina
Fil: Contreras, Victor Hugo. Universidad Nacional de San Juan. Facultad de Ciencias Exactas, Físicas y Naturales. Instituto de Geología "Dr. Emiliano Aparicio"; Argentina
Fil: Tomassini, Rodrigo Leandro. 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: Zurita, Alfredo Eduardo. Universidad Nacional del Nordeste. Facultad de Ciencias Exactas y Naturales y Agrimensura; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Nordeste. Centro de Ecología Aplicada del Litoral. Universidad Nacional del Nordeste. Centro de Ecología Aplicada del Litoral; Argentina
Reunión de Comunicaciones de la Asociación Paleontológica Argentina
La Plata
Argentina
Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo
Asociación Paleontológica Argentina
Fundación Museo de La Plata “Francisco Pascasio Moreno”
Materia
PROZAEDYUS
LATE MIOCENE
EVOLUTION
SAN JUAN PROVINCE
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:11336/174504
Acceder
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network_name_str CONICET Digital (CONICET)
spelling A new Pigmy Armadillo from the late Miocene (Chasicoan Stage/Age) of San Juan Province (Argentina)Barasoain Goñi, DanielContreras, Victor HugoTomassini, Rodrigo LeandroZurita, Alfredo EduardoPROZAEDYUSLATE MIOCENEEVOLUTIONSAN JUAN PROVINCEhttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1Zaedyus pichiy Desmarest, 1804, referred as pygmy or dwarf armadillo, is a Euphractinae (Xenarthra Cingulata) widely distributed in central-southern Argentina. The fossil record of this genus is well known since the Early-Middle Pleistocene. Prozaedyus Ameghino, 1891 was recognized remarking the evident morphological resemblance of the dorsal carapace respect to Zaedyus. From a phylogenetic point of view, Prozaedyus has been interpreted as an early diverging Euphractinae, restricted to the Late Oligocene and Early Miocene levels (Deseadan to Friasian SALMAs). We report here a new and particular specimen (MSJ-317) coming from the Late Miocene (Loma de Las Tapias Formation, Chasicoan Stage/Age) of the Province of San Juan, which represents a new species of Prozaedyus. The specimen includes an almost complete skull with complete dental series, some articulated fragments of the dorsal carapace and several isolated fixed and mobile osteoderms. Dental formula, ornamentation pattern of fixed osteoderms and presence of small foramina in the posterior and lateral margins of osteoderms are some of the characters that allow its inclusion within the genus Prozaedyus. Differences with known species include size (ca. 40% smaller), cranial characters (e.g., position of theinfraorbital foramen, skull bones sutures, morphology of the occipital condyles), and ornamentation pattern of mobile osteoderms. This record extends considerably the biochron of the genus up to Late Miocene. The phylogenetic analysis carried out supportits relationas a sister group of the other Prozaedyus species, and also reveals an ancient divergence of the analyzed lineage that occurs before that of the Late Oligocene-Early middle Miocene forms.Fil: Barasoain Goñi, Daniel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Nordeste. Centro de Ecología Aplicada del Litoral. Universidad Nacional del Nordeste. Centro de Ecología Aplicada del Litoral; Argentina. Universidad Nacional del Nordeste. Facultad de Ciencias Exactas y Naturales y Agrimensura; ArgentinaFil: Contreras, Victor Hugo. Universidad Nacional de San Juan. Facultad de Ciencias Exactas, Físicas y Naturales. Instituto de Geología "Dr. Emiliano Aparicio"; ArgentinaFil: Tomassini, Rodrigo Leandro. 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: Zurita, Alfredo Eduardo. Universidad Nacional del Nordeste. Facultad de Ciencias Exactas y Naturales y Agrimensura; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Nordeste. Centro de Ecología Aplicada del Litoral. Universidad Nacional del Nordeste. Centro de Ecología Aplicada del Litoral; ArgentinaReunión de Comunicaciones de la Asociación Paleontológica ArgentinaLa PlataArgentinaUniversidad Nacional de La Plata. Facultad de Ciencias Naturales y MuseoAsociación Paleontológica ArgentinaFundación Museo de La Plata “Francisco Pascasio Moreno”Asociación Paleontológica Argentina2019info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/conferenceObjectReuniónBookhttp://purl.org/coar/resource_type/c_5794info:ar-repo/semantics/documentoDeConferenciatext/plainapplication/pdfhttp://hdl.handle.net/11336/174504A new Pigmy Armadillo from the late Miocene (Chasicoan Stage/Age) of San Juan Province (Argentina); Reunión de Comunicaciones de la Asociación Paleontológica Argentina; La Plata; Argentina; 2019; 85-86CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://rcapa2019.fcnym.unlp.edu.ar/info:eu-repo/semantics/altIdentifier/url/https://www.apaleontologica.org.ar/rcapa-reuniones-anteriores/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 Técnicas2025-09-03T09:47:12Zoai:ri.conicet.gov.ar:11336/174504instacron: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 09:47:12.998CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv A new Pigmy Armadillo from the late Miocene (Chasicoan Stage/Age) of San Juan Province (Argentina)
title A new Pigmy Armadillo from the late Miocene (Chasicoan Stage/Age) of San Juan Province (Argentina)
spellingShingle A new Pigmy Armadillo from the late Miocene (Chasicoan Stage/Age) of San Juan Province (Argentina)
Barasoain Goñi, Daniel
PROZAEDYUS
LATE MIOCENE
EVOLUTION
SAN JUAN PROVINCE
title_short A new Pigmy Armadillo from the late Miocene (Chasicoan Stage/Age) of San Juan Province (Argentina)
title_full A new Pigmy Armadillo from the late Miocene (Chasicoan Stage/Age) of San Juan Province (Argentina)
title_fullStr A new Pigmy Armadillo from the late Miocene (Chasicoan Stage/Age) of San Juan Province (Argentina)
title_full_unstemmed A new Pigmy Armadillo from the late Miocene (Chasicoan Stage/Age) of San Juan Province (Argentina)
title_sort A new Pigmy Armadillo from the late Miocene (Chasicoan Stage/Age) of San Juan Province (Argentina)
dc.creator.none.fl_str_mv Barasoain Goñi, Daniel
Contreras, Victor Hugo
Tomassini, Rodrigo Leandro
Zurita, Alfredo Eduardo
author Barasoain Goñi, Daniel
author_facet Barasoain Goñi, Daniel
Contreras, Victor Hugo
Tomassini, Rodrigo Leandro
Zurita, Alfredo Eduardo
author_role author
author2 Contreras, Victor Hugo
Tomassini, Rodrigo Leandro
Zurita, Alfredo Eduardo
author2_role author
author
author
dc.subject.none.fl_str_mv PROZAEDYUS
LATE MIOCENE
EVOLUTION
SAN JUAN PROVINCE
topic PROZAEDYUS
LATE MIOCENE
EVOLUTION
SAN JUAN PROVINCE
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.5
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Zaedyus pichiy Desmarest, 1804, referred as pygmy or dwarf armadillo, is a Euphractinae (Xenarthra Cingulata) widely distributed in central-southern Argentina. The fossil record of this genus is well known since the Early-Middle Pleistocene. Prozaedyus Ameghino, 1891 was recognized remarking the evident morphological resemblance of the dorsal carapace respect to Zaedyus. From a phylogenetic point of view, Prozaedyus has been interpreted as an early diverging Euphractinae, restricted to the Late Oligocene and Early Miocene levels (Deseadan to Friasian SALMAs). We report here a new and particular specimen (MSJ-317) coming from the Late Miocene (Loma de Las Tapias Formation, Chasicoan Stage/Age) of the Province of San Juan, which represents a new species of Prozaedyus. The specimen includes an almost complete skull with complete dental series, some articulated fragments of the dorsal carapace and several isolated fixed and mobile osteoderms. Dental formula, ornamentation pattern of fixed osteoderms and presence of small foramina in the posterior and lateral margins of osteoderms are some of the characters that allow its inclusion within the genus Prozaedyus. Differences with known species include size (ca. 40% smaller), cranial characters (e.g., position of theinfraorbital foramen, skull bones sutures, morphology of the occipital condyles), and ornamentation pattern of mobile osteoderms. This record extends considerably the biochron of the genus up to Late Miocene. The phylogenetic analysis carried out supportits relationas a sister group of the other Prozaedyus species, and also reveals an ancient divergence of the analyzed lineage that occurs before that of the Late Oligocene-Early middle Miocene forms.
Fil: Barasoain Goñi, Daniel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Nordeste. Centro de Ecología Aplicada del Litoral. Universidad Nacional del Nordeste. Centro de Ecología Aplicada del Litoral; Argentina. Universidad Nacional del Nordeste. Facultad de Ciencias Exactas y Naturales y Agrimensura; Argentina
Fil: Contreras, Victor Hugo. Universidad Nacional de San Juan. Facultad de Ciencias Exactas, Físicas y Naturales. Instituto de Geología "Dr. Emiliano Aparicio"; Argentina
Fil: Tomassini, Rodrigo Leandro. 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: Zurita, Alfredo Eduardo. Universidad Nacional del Nordeste. Facultad de Ciencias Exactas y Naturales y Agrimensura; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Nordeste. Centro de Ecología Aplicada del Litoral. Universidad Nacional del Nordeste. Centro de Ecología Aplicada del Litoral; Argentina
Reunión de Comunicaciones de la Asociación Paleontológica Argentina
La Plata
Argentina
Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo
Asociación Paleontológica Argentina
Fundación Museo de La Plata “Francisco Pascasio Moreno”
description Zaedyus pichiy Desmarest, 1804, referred as pygmy or dwarf armadillo, is a Euphractinae (Xenarthra Cingulata) widely distributed in central-southern Argentina. The fossil record of this genus is well known since the Early-Middle Pleistocene. Prozaedyus Ameghino, 1891 was recognized remarking the evident morphological resemblance of the dorsal carapace respect to Zaedyus. From a phylogenetic point of view, Prozaedyus has been interpreted as an early diverging Euphractinae, restricted to the Late Oligocene and Early Miocene levels (Deseadan to Friasian SALMAs). We report here a new and particular specimen (MSJ-317) coming from the Late Miocene (Loma de Las Tapias Formation, Chasicoan Stage/Age) of the Province of San Juan, which represents a new species of Prozaedyus. The specimen includes an almost complete skull with complete dental series, some articulated fragments of the dorsal carapace and several isolated fixed and mobile osteoderms. Dental formula, ornamentation pattern of fixed osteoderms and presence of small foramina in the posterior and lateral margins of osteoderms are some of the characters that allow its inclusion within the genus Prozaedyus. Differences with known species include size (ca. 40% smaller), cranial characters (e.g., position of theinfraorbital foramen, skull bones sutures, morphology of the occipital condyles), and ornamentation pattern of mobile osteoderms. This record extends considerably the biochron of the genus up to Late Miocene. The phylogenetic analysis carried out supportits relationas a sister group of the other Prozaedyus species, and also reveals an ancient divergence of the analyzed lineage that occurs before that of the Late Oligocene-Early middle Miocene forms.
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
Reunión
Book
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/11336/174504
A new Pigmy Armadillo from the late Miocene (Chasicoan Stage/Age) of San Juan Province (Argentina); Reunión de Comunicaciones de la Asociación Paleontológica Argentina; La Plata; Argentina; 2019; 85-86
CONICET Digital
CONICET
url http://hdl.handle.net/11336/174504
identifier_str_mv A new Pigmy Armadillo from the late Miocene (Chasicoan Stage/Age) of San Juan Province (Argentina); Reunión de Comunicaciones de la Asociación Paleontológica Argentina; La Plata; Argentina; 2019; 85-86
CONICET Digital
CONICET
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language eng
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rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv text/plain
application/pdf
dc.coverage.none.fl_str_mv Nacional
dc.publisher.none.fl_str_mv Asociación Paleontológica Argentina
publisher.none.fl_str_mv Asociación Paleontológica Argentina
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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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