A new calymmate mimosoid polyad from the Miocene of Argentina

Autores
Caccavari, Marta Alicia; Barreda, Viviana Dora
Año de publicación
2000
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
A palynomorph with an unequivocal relationship to the eight-grain polyads of the mimosoid genus Calliandra Benth., is described from the Miocene sediments of San Juan Province, Argentina. Comparison of the fossil palynomorph with polyads of the extant Calliandra species shows a resemblance to those which have one, highly specialized, appendiculate monad. The new palynomorph has a rudimentary appendix, apparently transitional in the path leading to the more highly developed appendiculate forms in the extant Calliandra group. This specialized polyad type is considered to be one of the most highly evolved forms in subfamily Mimosoideae. The closest affinity of the new fossil polyad is with the eight-grain calymmate polyads of Calliandra chilensis Benth., a species which has developed in the extra-tropical, xerophilous shrub, habitat of north-central Chile. The disappearance of Calliandra species in San Juan Province is thought to be related to the culmination of the Andean rising, and the consequent interruption to the Pacific Ocean climatic influence. This new discovery is the first fossil record of Calliandra for Argentina, as well as being the most southerly and the oldest. It reinforces the hypothesis of an early origin and diversification for the Leguminosae in Tropical America.
Fil: Caccavari, Marta Alicia. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales “Bernardino Rivadavia”; Argentina
Fil: Barreda, Viviana Dora. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro de Investigaciones en Recursos Geológicos (i); Argentina
Materia
Appendiculate
Argentina
Calliandra
Calymmate
Eight-Grain Polyad
Miocene
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:11336/71718
Acceder
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network_name_str CONICET Digital (CONICET)
spelling A new calymmate mimosoid polyad from the Miocene of ArgentinaCaccavari, Marta AliciaBarreda, Viviana DoraAppendiculateArgentinaCalliandraCalymmateEight-Grain PolyadMiocenehttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1A palynomorph with an unequivocal relationship to the eight-grain polyads of the mimosoid genus Calliandra Benth., is described from the Miocene sediments of San Juan Province, Argentina. Comparison of the fossil palynomorph with polyads of the extant Calliandra species shows a resemblance to those which have one, highly specialized, appendiculate monad. The new palynomorph has a rudimentary appendix, apparently transitional in the path leading to the more highly developed appendiculate forms in the extant Calliandra group. This specialized polyad type is considered to be one of the most highly evolved forms in subfamily Mimosoideae. The closest affinity of the new fossil polyad is with the eight-grain calymmate polyads of Calliandra chilensis Benth., a species which has developed in the extra-tropical, xerophilous shrub, habitat of north-central Chile. The disappearance of Calliandra species in San Juan Province is thought to be related to the culmination of the Andean rising, and the consequent interruption to the Pacific Ocean climatic influence. This new discovery is the first fossil record of Calliandra for Argentina, as well as being the most southerly and the oldest. It reinforces the hypothesis of an early origin and diversification for the Leguminosae in Tropical America.Fil: Caccavari, Marta Alicia. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales “Bernardino Rivadavia”; ArgentinaFil: Barreda, Viviana Dora. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro de Investigaciones en Recursos Geológicos (i); ArgentinaElsevier Science2000-05info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/71718Caccavari, Marta Alicia; Barreda, Viviana Dora; A new calymmate mimosoid polyad from the Miocene of Argentina; Elsevier Science; Review of Palaeobotany and Palynology; 109; 3-4; 5-2000; 197-2030034-6667CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1016/S0034-6667(99)00051-2info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0034666799000512info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T09:32:38Zoai:ri.conicet.gov.ar:11336/71718instacron: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 09:32:38.677CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv A new calymmate mimosoid polyad from the Miocene of Argentina
title A new calymmate mimosoid polyad from the Miocene of Argentina
spellingShingle A new calymmate mimosoid polyad from the Miocene of Argentina
Caccavari, Marta Alicia
Appendiculate
Argentina
Calliandra
Calymmate
Eight-Grain Polyad
Miocene
title_short A new calymmate mimosoid polyad from the Miocene of Argentina
title_full A new calymmate mimosoid polyad from the Miocene of Argentina
title_fullStr A new calymmate mimosoid polyad from the Miocene of Argentina
title_full_unstemmed A new calymmate mimosoid polyad from the Miocene of Argentina
title_sort A new calymmate mimosoid polyad from the Miocene of Argentina
dc.creator.none.fl_str_mv Caccavari, Marta Alicia
Barreda, Viviana Dora
author Caccavari, Marta Alicia
author_facet Caccavari, Marta Alicia
Barreda, Viviana Dora
author_role author
author2 Barreda, Viviana Dora
author2_role author
dc.subject.none.fl_str_mv Appendiculate
Argentina
Calliandra
Calymmate
Eight-Grain Polyad
Miocene
topic Appendiculate
Argentina
Calliandra
Calymmate
Eight-Grain Polyad
Miocene
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.5
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv A palynomorph with an unequivocal relationship to the eight-grain polyads of the mimosoid genus Calliandra Benth., is described from the Miocene sediments of San Juan Province, Argentina. Comparison of the fossil palynomorph with polyads of the extant Calliandra species shows a resemblance to those which have one, highly specialized, appendiculate monad. The new palynomorph has a rudimentary appendix, apparently transitional in the path leading to the more highly developed appendiculate forms in the extant Calliandra group. This specialized polyad type is considered to be one of the most highly evolved forms in subfamily Mimosoideae. The closest affinity of the new fossil polyad is with the eight-grain calymmate polyads of Calliandra chilensis Benth., a species which has developed in the extra-tropical, xerophilous shrub, habitat of north-central Chile. The disappearance of Calliandra species in San Juan Province is thought to be related to the culmination of the Andean rising, and the consequent interruption to the Pacific Ocean climatic influence. This new discovery is the first fossil record of Calliandra for Argentina, as well as being the most southerly and the oldest. It reinforces the hypothesis of an early origin and diversification for the Leguminosae in Tropical America.
Fil: Caccavari, Marta Alicia. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales “Bernardino Rivadavia”; Argentina
Fil: Barreda, Viviana Dora. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro de Investigaciones en Recursos Geológicos (i); Argentina
description A palynomorph with an unequivocal relationship to the eight-grain polyads of the mimosoid genus Calliandra Benth., is described from the Miocene sediments of San Juan Province, Argentina. Comparison of the fossil palynomorph with polyads of the extant Calliandra species shows a resemblance to those which have one, highly specialized, appendiculate monad. The new palynomorph has a rudimentary appendix, apparently transitional in the path leading to the more highly developed appendiculate forms in the extant Calliandra group. This specialized polyad type is considered to be one of the most highly evolved forms in subfamily Mimosoideae. The closest affinity of the new fossil polyad is with the eight-grain calymmate polyads of Calliandra chilensis Benth., a species which has developed in the extra-tropical, xerophilous shrub, habitat of north-central Chile. The disappearance of Calliandra species in San Juan Province is thought to be related to the culmination of the Andean rising, and the consequent interruption to the Pacific Ocean climatic influence. This new discovery is the first fossil record of Calliandra for Argentina, as well as being the most southerly and the oldest. It reinforces the hypothesis of an early origin and diversification for the Leguminosae in Tropical America.
publishDate 2000
dc.date.none.fl_str_mv 2000-05
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/11336/71718
Caccavari, Marta Alicia; Barreda, Viviana Dora; A new calymmate mimosoid polyad from the Miocene of Argentina; Elsevier Science; Review of Palaeobotany and Palynology; 109; 3-4; 5-2000; 197-203
0034-6667
CONICET Digital
CONICET
url http://hdl.handle.net/11336/71718
identifier_str_mv Caccavari, Marta Alicia; Barreda, Viviana Dora; A new calymmate mimosoid polyad from the Miocene of Argentina; Elsevier Science; Review of Palaeobotany and Palynology; 109; 3-4; 5-2000; 197-203
0034-6667
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1016/S0034-6667(99)00051-2
info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0034666799000512
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 Elsevier Science
publisher.none.fl_str_mv Elsevier Science
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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