Astrapotheres from Cañadón Vaca, middle Eocene of central Patagonia: New insights on diversity, anatomy, and early evolution of Astrapotheria

Autores
Kramarz, Alejandro Gustavo; Bond, Mariano; Carlini, Alfredo Armando
Año de publicación
2019
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Astrapotheria is one of the most emblematic groups of endemic South American ungulate-like extinct mammals, traditionally compared with modern tapirs and rhinos. Oldest astrapotheres are known from the early Eocene Itaboraian fauna (Brazil), but the earliest diverse astrapothere assemblage is known from the middle Eocene Cañadón Vaca Member of the Sarmiento Formation exposed at Cañadón Vaca (Vacan subage of the Casamayoran Land Mammal Age), in central Patagonia, Argentina. Previous reports of astrapotheres from Cañadón Vaca included Trigonostylops, Tetragonostylops, Albertogaudrya, and Scaglia, but only the record of the latter was unequivocal. New materials from Cañadón Vaca described herein confirms the occurrence of Trigonostylops (T. wortmani) and of Tetragonostylops (likely represented by a species different from the nominal species from Itaboraí). Additionally, two other taxa are identified: The former, described as cf. Scaglia cf. kraglievichorum, is represented by a partial skull with an unusual combination of cranial characters, and could correspond to an adult of Scaglia kraglievichorum (known by a juvenile skull); the other taxon is represented by a partial mandible with distinctive osteological and dental features, but the possibility of its belonging to Scaglia cannot be discarded. The occurrence of Albertogaudrya in Cañadón Vaca could not be confirmed by the examination of the new and previous collections. Astrapotheres from Cañadón Vaca show a wide morphological disparity of cranial designs, but all consistently share long, unreduced nasals, thus the presumed possession of a short tapir-like proboscis only typifies the post-Casamayoran astrapotheres.
Fil: Kramarz, Alejandro Gustavo. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. Departamento Científico de Paleontología de Vertebrados; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales "Bernardino Rivadavia"; Argentina
Fil: Bond, Mariano. 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 Paleontología Vertebrados; Argentina
Fil: Carlini, Alfredo Armando. 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 Paleontología Vertebrados; Argentina
Materia
ASTRAPOTHERIA
CAÑADÓN VACA
EOCENE
PATAGONIA
SARMIENTO FORMATION
SYSTEMATICS
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:11336/128520
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/128520
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Astrapotheres from Cañadón Vaca, middle Eocene of central Patagonia: New insights on diversity, anatomy, and early evolution of AstrapotheriaKramarz, Alejandro GustavoBond, MarianoCarlini, Alfredo ArmandoASTRAPOTHERIACAÑADÓN VACAEOCENEPATAGONIASARMIENTO FORMATIONSYSTEMATICShttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1Astrapotheria is one of the most emblematic groups of endemic South American ungulate-like extinct mammals, traditionally compared with modern tapirs and rhinos. Oldest astrapotheres are known from the early Eocene Itaboraian fauna (Brazil), but the earliest diverse astrapothere assemblage is known from the middle Eocene Cañadón Vaca Member of the Sarmiento Formation exposed at Cañadón Vaca (Vacan subage of the Casamayoran Land Mammal Age), in central Patagonia, Argentina. Previous reports of astrapotheres from Cañadón Vaca included Trigonostylops, Tetragonostylops, Albertogaudrya, and Scaglia, but only the record of the latter was unequivocal. New materials from Cañadón Vaca described herein confirms the occurrence of Trigonostylops (T. wortmani) and of Tetragonostylops (likely represented by a species different from the nominal species from Itaboraí). Additionally, two other taxa are identified: The former, described as cf. Scaglia cf. kraglievichorum, is represented by a partial skull with an unusual combination of cranial characters, and could correspond to an adult of Scaglia kraglievichorum (known by a juvenile skull); the other taxon is represented by a partial mandible with distinctive osteological and dental features, but the possibility of its belonging to Scaglia cannot be discarded. The occurrence of Albertogaudrya in Cañadón Vaca could not be confirmed by the examination of the new and previous collections. Astrapotheres from Cañadón Vaca show a wide morphological disparity of cranial designs, but all consistently share long, unreduced nasals, thus the presumed possession of a short tapir-like proboscis only typifies the post-Casamayoran astrapotheres.Fil: Kramarz, Alejandro Gustavo. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. Departamento Científico de Paleontología de Vertebrados; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales "Bernardino Rivadavia"; ArgentinaFil: Bond, Mariano. 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 Paleontología Vertebrados; ArgentinaFil: Carlini, Alfredo Armando. 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 Paleontología Vertebrados; ArgentinaCoquina Press2019-08info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/128520Kramarz, Alejandro Gustavo; Bond, Mariano; Carlini, Alfredo Armando; Astrapotheres from Cañadón Vaca, middle Eocene of central Patagonia: New insights on diversity, anatomy, and early evolution of Astrapotheria; Coquina Press; Palaeontologia Electronica; 22; 2; 8-2019; 1-221094-80741532-3056CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://palaeo-electronica.org/content/2019/2688-canadon-vaca-astrapotheresinfo:eu-repo/semantics/altIdentifier/doi/10.26879/986info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:07:10Zoai:ri.conicet.gov.ar:11336/128520instacron: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:34982025-09-29 10:07:10.656CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Astrapotheres from Cañadón Vaca, middle Eocene of central Patagonia: New insights on diversity, anatomy, and early evolution of Astrapotheria
title Astrapotheres from Cañadón Vaca, middle Eocene of central Patagonia: New insights on diversity, anatomy, and early evolution of Astrapotheria
spellingShingle Astrapotheres from Cañadón Vaca, middle Eocene of central Patagonia: New insights on diversity, anatomy, and early evolution of Astrapotheria
Kramarz, Alejandro Gustavo
ASTRAPOTHERIA
CAÑADÓN VACA
EOCENE
PATAGONIA
SARMIENTO FORMATION
SYSTEMATICS
title_short Astrapotheres from Cañadón Vaca, middle Eocene of central Patagonia: New insights on diversity, anatomy, and early evolution of Astrapotheria
title_full Astrapotheres from Cañadón Vaca, middle Eocene of central Patagonia: New insights on diversity, anatomy, and early evolution of Astrapotheria
title_fullStr Astrapotheres from Cañadón Vaca, middle Eocene of central Patagonia: New insights on diversity, anatomy, and early evolution of Astrapotheria
title_full_unstemmed Astrapotheres from Cañadón Vaca, middle Eocene of central Patagonia: New insights on diversity, anatomy, and early evolution of Astrapotheria
title_sort Astrapotheres from Cañadón Vaca, middle Eocene of central Patagonia: New insights on diversity, anatomy, and early evolution of Astrapotheria
dc.creator.none.fl_str_mv Kramarz, Alejandro Gustavo
Bond, Mariano
Carlini, Alfredo Armando
author Kramarz, Alejandro Gustavo
author_facet Kramarz, Alejandro Gustavo
Bond, Mariano
Carlini, Alfredo Armando
author_role author
author2 Bond, Mariano
Carlini, Alfredo Armando
author2_role author
author
dc.subject.none.fl_str_mv ASTRAPOTHERIA
CAÑADÓN VACA
EOCENE
PATAGONIA
SARMIENTO FORMATION
SYSTEMATICS
topic ASTRAPOTHERIA
CAÑADÓN VACA
EOCENE
PATAGONIA
SARMIENTO FORMATION
SYSTEMATICS
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.5
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Astrapotheria is one of the most emblematic groups of endemic South American ungulate-like extinct mammals, traditionally compared with modern tapirs and rhinos. Oldest astrapotheres are known from the early Eocene Itaboraian fauna (Brazil), but the earliest diverse astrapothere assemblage is known from the middle Eocene Cañadón Vaca Member of the Sarmiento Formation exposed at Cañadón Vaca (Vacan subage of the Casamayoran Land Mammal Age), in central Patagonia, Argentina. Previous reports of astrapotheres from Cañadón Vaca included Trigonostylops, Tetragonostylops, Albertogaudrya, and Scaglia, but only the record of the latter was unequivocal. New materials from Cañadón Vaca described herein confirms the occurrence of Trigonostylops (T. wortmani) and of Tetragonostylops (likely represented by a species different from the nominal species from Itaboraí). Additionally, two other taxa are identified: The former, described as cf. Scaglia cf. kraglievichorum, is represented by a partial skull with an unusual combination of cranial characters, and could correspond to an adult of Scaglia kraglievichorum (known by a juvenile skull); the other taxon is represented by a partial mandible with distinctive osteological and dental features, but the possibility of its belonging to Scaglia cannot be discarded. The occurrence of Albertogaudrya in Cañadón Vaca could not be confirmed by the examination of the new and previous collections. Astrapotheres from Cañadón Vaca show a wide morphological disparity of cranial designs, but all consistently share long, unreduced nasals, thus the presumed possession of a short tapir-like proboscis only typifies the post-Casamayoran astrapotheres.
Fil: Kramarz, Alejandro Gustavo. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. Departamento Científico de Paleontología de Vertebrados; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales "Bernardino Rivadavia"; Argentina
Fil: Bond, Mariano. 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 Paleontología Vertebrados; Argentina
Fil: Carlini, Alfredo Armando. 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 Paleontología Vertebrados; Argentina
description Astrapotheria is one of the most emblematic groups of endemic South American ungulate-like extinct mammals, traditionally compared with modern tapirs and rhinos. Oldest astrapotheres are known from the early Eocene Itaboraian fauna (Brazil), but the earliest diverse astrapothere assemblage is known from the middle Eocene Cañadón Vaca Member of the Sarmiento Formation exposed at Cañadón Vaca (Vacan subage of the Casamayoran Land Mammal Age), in central Patagonia, Argentina. Previous reports of astrapotheres from Cañadón Vaca included Trigonostylops, Tetragonostylops, Albertogaudrya, and Scaglia, but only the record of the latter was unequivocal. New materials from Cañadón Vaca described herein confirms the occurrence of Trigonostylops (T. wortmani) and of Tetragonostylops (likely represented by a species different from the nominal species from Itaboraí). Additionally, two other taxa are identified: The former, described as cf. Scaglia cf. kraglievichorum, is represented by a partial skull with an unusual combination of cranial characters, and could correspond to an adult of Scaglia kraglievichorum (known by a juvenile skull); the other taxon is represented by a partial mandible with distinctive osteological and dental features, but the possibility of its belonging to Scaglia cannot be discarded. The occurrence of Albertogaudrya in Cañadón Vaca could not be confirmed by the examination of the new and previous collections. Astrapotheres from Cañadón Vaca show a wide morphological disparity of cranial designs, but all consistently share long, unreduced nasals, thus the presumed possession of a short tapir-like proboscis only typifies the post-Casamayoran astrapotheres.
publishDate 2019
dc.date.none.fl_str_mv 2019-08
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/11336/128520
Kramarz, Alejandro Gustavo; Bond, Mariano; Carlini, Alfredo Armando; Astrapotheres from Cañadón Vaca, middle Eocene of central Patagonia: New insights on diversity, anatomy, and early evolution of Astrapotheria; Coquina Press; Palaeontologia Electronica; 22; 2; 8-2019; 1-22
1094-8074
1532-3056
CONICET Digital
CONICET
url http://hdl.handle.net/11336/128520
identifier_str_mv Kramarz, Alejandro Gustavo; Bond, Mariano; Carlini, Alfredo Armando; Astrapotheres from Cañadón Vaca, middle Eocene of central Patagonia: New insights on diversity, anatomy, and early evolution of Astrapotheria; Coquina Press; Palaeontologia Electronica; 22; 2; 8-2019; 1-22
1094-8074
1532-3056
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/https://palaeo-electronica.org/content/2019/2688-canadon-vaca-astrapotheres
info:eu-repo/semantics/altIdentifier/doi/10.26879/986
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv Coquina Press
publisher.none.fl_str_mv Coquina Press
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
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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score 13.070432

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