New studies on Karkenia incurva Archang: from the Early Cretaceous of Argentina. Evolution of the seed cone in Ginkgoales

Autores
del Fueyo, Georgina Marisa; Archangelsky, Sergio
Año de publicación
2001
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
New material of the ginkgoalean seed cone Karkenia incurva Archang. from the Lower Cretaceous Baquero Formation of Patagonia is described. The seed cone gross morphology is similar to that of the holotype. Study of the megaspore membrane with SEM and TEM shows that ovules of K. incurva at time of fossilization were mature. Also, the ultrastructure of this membrane has a striking resemblance to that of Ginkgo biloba. Evolution of the seed cone in Ginkgophytes is discussed, and it is suggested that Paleozoic Dicranophyllales could be the ancestral stock from which Mesozoic Ginkgoales evolved.
Neue Funde des Samenzapfens Karkenia incurva Archang. (Ginkgoales) aus der Baquero Formation der frühen Kreidezeit in Patagonien werden beschrieben. Die generelle Morphologie des Samenzapfens entspricht der des Holotyps. Mit Hilfe von SEM und TEM w ird die Megasporenmembran untersucht. Die Ultastruktur dieser Membran zeigt, daß die Samenanlagen von K. incurva zum Zeitpunkt der Versteinerung zur vollen Reife entwickelt waren. Fossile Samenzapfen der Ginkgoales einschließlich der Samenanlagen der heute vorkommenden Art Ginkgo biloba werden verglichen. Die Evolution des Samenzapfens innerhalb der Ordnung wird diskutiert.
Fil: del Fueyo, Georgina Marisa. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales "Bernardino Rivadavia"; Argentina
Fil: Archangelsky, Sergio. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales "Bernardino Rivadavia"; Argentina
Materia
Gymnosperms
Ginkgoales
seed cone
morphology
cuticle
megaspore membrane
ultrastructure
evolution
Baqueró Formation
Santa Cruz Province
Patagonia
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:11336/136405
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/136405
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling New studies on Karkenia incurva Archang: from the Early Cretaceous of Argentina. Evolution of the seed cone in Ginkgoalesdel Fueyo, Georgina MarisaArchangelsky, SergioGymnospermsGinkgoalesseed conemorphologycuticlemegaspore membraneultrastructureevolutionBaqueró FormationSanta Cruz ProvincePatagoniahttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1New material of the ginkgoalean seed cone Karkenia incurva Archang. from the Lower Cretaceous Baquero Formation of Patagonia is described. The seed cone gross morphology is similar to that of the holotype. Study of the megaspore membrane with SEM and TEM shows that ovules of K. incurva at time of fossilization were mature. Also, the ultrastructure of this membrane has a striking resemblance to that of Ginkgo biloba. Evolution of the seed cone in Ginkgophytes is discussed, and it is suggested that Paleozoic Dicranophyllales could be the ancestral stock from which Mesozoic Ginkgoales evolved.Neue Funde des Samenzapfens Karkenia incurva Archang. (Ginkgoales) aus der Baquero Formation der frühen Kreidezeit in Patagonien werden beschrieben. Die generelle Morphologie des Samenzapfens entspricht der des Holotyps. Mit Hilfe von SEM und TEM w ird die Megasporenmembran untersucht. Die Ultastruktur dieser Membran zeigt, daß die Samenanlagen von K. incurva zum Zeitpunkt der Versteinerung zur vollen Reife entwickelt waren. Fossile Samenzapfen der Ginkgoales einschließlich der Samenanlagen der heute vorkommenden Art Ginkgo biloba werden verglichen. Die Evolution des Samenzapfens innerhalb der Ordnung wird diskutiert.Fil: del Fueyo, Georgina Marisa. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales "Bernardino Rivadavia"; ArgentinaFil: Archangelsky, Sergio. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales "Bernardino Rivadavia"; ArgentinaE Schweizerbartsche Verlags2001-12info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/136405del Fueyo, Georgina Marisa; Archangelsky, Sergio; New studies on Karkenia incurva Archang: from the Early Cretaceous of Argentina. Evolution of the seed cone in Ginkgoales; E Schweizerbartsche Verlags; Palaeontographica; 256; 4-6; 12-2001; 111-1210375-0442CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://www.schweizerbart.de/papers/palab/detail/256/72572/New_studies_on_iKarkenia_incurva_i_ARCHANG_from_the_Early_Cretaceousof_Argentinainfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:44:14Zoai:ri.conicet.gov.ar:11336/136405instacron: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 10:44:14.359CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv New studies on Karkenia incurva Archang: from the Early Cretaceous of Argentina. Evolution of the seed cone in Ginkgoales
title New studies on Karkenia incurva Archang: from the Early Cretaceous of Argentina. Evolution of the seed cone in Ginkgoales
spellingShingle New studies on Karkenia incurva Archang: from the Early Cretaceous of Argentina. Evolution of the seed cone in Ginkgoales
del Fueyo, Georgina Marisa
Gymnosperms
Ginkgoales
seed cone
morphology
cuticle
megaspore membrane
ultrastructure
evolution
Baqueró Formation
Santa Cruz Province
Patagonia
title_short New studies on Karkenia incurva Archang: from the Early Cretaceous of Argentina. Evolution of the seed cone in Ginkgoales
title_full New studies on Karkenia incurva Archang: from the Early Cretaceous of Argentina. Evolution of the seed cone in Ginkgoales
title_fullStr New studies on Karkenia incurva Archang: from the Early Cretaceous of Argentina. Evolution of the seed cone in Ginkgoales
title_full_unstemmed New studies on Karkenia incurva Archang: from the Early Cretaceous of Argentina. Evolution of the seed cone in Ginkgoales
title_sort New studies on Karkenia incurva Archang: from the Early Cretaceous of Argentina. Evolution of the seed cone in Ginkgoales
dc.creator.none.fl_str_mv del Fueyo, Georgina Marisa
Archangelsky, Sergio
author del Fueyo, Georgina Marisa
author_facet del Fueyo, Georgina Marisa
Archangelsky, Sergio
author_role author
author2 Archangelsky, Sergio
author2_role author
dc.subject.none.fl_str_mv Gymnosperms
Ginkgoales
seed cone
morphology
cuticle
megaspore membrane
ultrastructure
evolution
Baqueró Formation
Santa Cruz Province
Patagonia
topic Gymnosperms
Ginkgoales
seed cone
morphology
cuticle
megaspore membrane
ultrastructure
evolution
Baqueró Formation
Santa Cruz Province
Patagonia
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.5
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv New material of the ginkgoalean seed cone Karkenia incurva Archang. from the Lower Cretaceous Baquero Formation of Patagonia is described. The seed cone gross morphology is similar to that of the holotype. Study of the megaspore membrane with SEM and TEM shows that ovules of K. incurva at time of fossilization were mature. Also, the ultrastructure of this membrane has a striking resemblance to that of Ginkgo biloba. Evolution of the seed cone in Ginkgophytes is discussed, and it is suggested that Paleozoic Dicranophyllales could be the ancestral stock from which Mesozoic Ginkgoales evolved.
Neue Funde des Samenzapfens Karkenia incurva Archang. (Ginkgoales) aus der Baquero Formation der frühen Kreidezeit in Patagonien werden beschrieben. Die generelle Morphologie des Samenzapfens entspricht der des Holotyps. Mit Hilfe von SEM und TEM w ird die Megasporenmembran untersucht. Die Ultastruktur dieser Membran zeigt, daß die Samenanlagen von K. incurva zum Zeitpunkt der Versteinerung zur vollen Reife entwickelt waren. Fossile Samenzapfen der Ginkgoales einschließlich der Samenanlagen der heute vorkommenden Art Ginkgo biloba werden verglichen. Die Evolution des Samenzapfens innerhalb der Ordnung wird diskutiert.
Fil: del Fueyo, Georgina Marisa. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales "Bernardino Rivadavia"; Argentina
Fil: Archangelsky, Sergio. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales "Bernardino Rivadavia"; Argentina
description New material of the ginkgoalean seed cone Karkenia incurva Archang. from the Lower Cretaceous Baquero Formation of Patagonia is described. The seed cone gross morphology is similar to that of the holotype. Study of the megaspore membrane with SEM and TEM shows that ovules of K. incurva at time of fossilization were mature. Also, the ultrastructure of this membrane has a striking resemblance to that of Ginkgo biloba. Evolution of the seed cone in Ginkgophytes is discussed, and it is suggested that Paleozoic Dicranophyllales could be the ancestral stock from which Mesozoic Ginkgoales evolved.
publishDate 2001
dc.date.none.fl_str_mv 2001-12
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/11336/136405
del Fueyo, Georgina Marisa; Archangelsky, Sergio; New studies on Karkenia incurva Archang: from the Early Cretaceous of Argentina. Evolution of the seed cone in Ginkgoales; E Schweizerbartsche Verlags; Palaeontographica; 256; 4-6; 12-2001; 111-121
0375-0442
CONICET Digital
CONICET
url http://hdl.handle.net/11336/136405
identifier_str_mv del Fueyo, Georgina Marisa; Archangelsky, Sergio; New studies on Karkenia incurva Archang: from the Early Cretaceous of Argentina. Evolution of the seed cone in Ginkgoales; E Schweizerbartsche Verlags; Palaeontographica; 256; 4-6; 12-2001; 111-121
0375-0442
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://www.schweizerbart.de/papers/palab/detail/256/72572/New_studies_on_iKarkenia_incurva_i_ARCHANG_from_the_Early_Cretaceousof_Argentina
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 E Schweizerbartsche Verlags
publisher.none.fl_str_mv E Schweizerbartsche Verlags
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
_version_ 1844614479140093952
score 13.070432

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