Revision of Fedekurtzia (pteridosperm) and allied fronds from the Carboniferous of Gondwana

Autores
Coturel, Eliana Paula; Césari, Silvia N.
Año de publicación
2017
Idioma
inglés
Tipo de recurso
reseña artículo
Estado
versión publicada
Descripción
Carboniferous foliage of Fedekurtzia Argentina (Kurtz) Archangelsky from Gondwana is systematically described and revised. The frond is reconstructed based on specimens of the late Serpukhovian-Bashkirian Nothorhacopteris/Botrychiopsis/Ginkgophyllum flora of western Argentina, especially from the Jejenes, Tupe and Volcán formations. The whole-frond reconstruction emphasizes the variation in pinnule shape throughout the basal, medial and distal sections of the frond. The basalmost rachis possesses cyclopteroid pinnules grading to pinnae with obovate to wedge-shaped pinnules at the medial section of the frond. Distal pinnae are shorter, bearing imbricate and more dissected pinnules. Specimens from the same type locality from which F. Argentina comes, previously assigned to Triphyllopteris cuyana Leguizamón & Vega, are reassigned to F. Argentina, as well as ovuliferous and microsporangiate structures in organic connection. Two decades ago a revision of the German Triphyllopteris genus rejected T. cuyana as representative of the taxon, and the Argentinian specimens remained as indeterminate "triphyllopteroid" fronds. The ovulate organ Polycalyx Vega & Archangelsky is considered to be in organic connection with vegetative fragments of F. Argentina, and its cupulate character is discussed. Pollen organs represented by multi-forked axes bearing fusiform sporangia of Rinconadia Vega are also in organic attachment and included in the Fedekurtzia Argentina reconstruction. The pollen or prepollen grains are trilete and with granulate sculpture. The paper presents a comparison with Botrychiopsis weissiana Kurtz emend. Archangelsky & Arrondo, which differs in its rounded and entire-margin pinnules. Similar specimens from Australia formerly described as Rhacopteris, Sphenopteridium and Archaeopteris and currently included in Fedekurtzia intermedia Rigby share morphological characters with the Argentinian species. A revision of the Australian material is necessary to confirm synonymy. Fedekurtzia belongs to the pteridosperms based on the reproductive organs and is here assigned to Austrocalyxaceae. Its reconstruction now constitutes one of the most complete seed-ferns known from the Carboniferous of Gondwana.
Facultad de Ciencias Naturales y Museo
Materia
Paleontología
Botánica
Carboniferous
Fedekurtzia
Gondwana
pteridosperms
taxonomy
Nivel de accesibilidad
acceso abierto
Condiciones de uso
http://creativecommons.org/licenses/by-nc-nd/4.0/
Repositorio
SEDICI (UNLP)
Institución
Universidad Nacional de La Plata
OAI Identificador
oai:sedici.unlp.edu.ar:10915/87182

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spelling Revision of Fedekurtzia (pteridosperm) and allied fronds from the Carboniferous of GondwanaCoturel, Eliana PaulaCésari, Silvia N.PaleontologíaBotánicaCarboniferousFedekurtziaGondwanapteridospermstaxonomyCarboniferous foliage of Fedekurtzia Argentina (Kurtz) Archangelsky from Gondwana is systematically described and revised. The frond is reconstructed based on specimens of the late Serpukhovian-Bashkirian Nothorhacopteris/Botrychiopsis/Ginkgophyllum flora of western Argentina, especially from the Jejenes, Tupe and Volcán formations. The whole-frond reconstruction emphasizes the variation in pinnule shape throughout the basal, medial and distal sections of the frond. The basalmost rachis possesses cyclopteroid pinnules grading to pinnae with obovate to wedge-shaped pinnules at the medial section of the frond. Distal pinnae are shorter, bearing imbricate and more dissected pinnules. Specimens from the same type locality from which F. Argentina comes, previously assigned to Triphyllopteris cuyana Leguizamón & Vega, are reassigned to F. Argentina, as well as ovuliferous and microsporangiate structures in organic connection. Two decades ago a revision of the German Triphyllopteris genus rejected T. cuyana as representative of the taxon, and the Argentinian specimens remained as indeterminate "triphyllopteroid" fronds. The ovulate organ Polycalyx Vega & Archangelsky is considered to be in organic connection with vegetative fragments of F. Argentina, and its cupulate character is discussed. Pollen organs represented by multi-forked axes bearing fusiform sporangia of Rinconadia Vega are also in organic attachment and included in the Fedekurtzia Argentina reconstruction. The pollen or prepollen grains are trilete and with granulate sculpture. The paper presents a comparison with Botrychiopsis weissiana Kurtz emend. Archangelsky & Arrondo, which differs in its rounded and entire-margin pinnules. Similar specimens from Australia formerly described as Rhacopteris, Sphenopteridium and Archaeopteris and currently included in Fedekurtzia intermedia Rigby share morphological characters with the Argentinian species. A revision of the Australian material is necessary to confirm synonymy. Fedekurtzia belongs to the pteridosperms based on the reproductive organs and is here assigned to Austrocalyxaceae. Its reconstruction now constitutes one of the most complete seed-ferns known from the Carboniferous of Gondwana.Facultad de Ciencias Naturales y Museo2017info:eu-repo/semantics/reviewinfo:eu-repo/semantics/publishedVersionRevisionhttp://purl.org/coar/resource_type/c_dcae04bcinfo:ar-repo/semantics/resenaArticuloapplication/pdf135-151http://sedici.unlp.edu.ar/handle/10915/87182enginfo:eu-repo/semantics/altIdentifier/issn/0001-6594info:eu-repo/semantics/altIdentifier/doi/10.1515/acpa-2017-0013info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by-nc-nd/4.0/Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2025-09-03T10:49:26Zoai:sedici.unlp.edu.ar:10915/87182Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-09-03 10:49:27.175SEDICI (UNLP) - Universidad Nacional de La Platafalse
dc.title.none.fl_str_mv Revision of Fedekurtzia (pteridosperm) and allied fronds from the Carboniferous of Gondwana
title Revision of Fedekurtzia (pteridosperm) and allied fronds from the Carboniferous of Gondwana
spellingShingle Revision of Fedekurtzia (pteridosperm) and allied fronds from the Carboniferous of Gondwana
Coturel, Eliana Paula
Paleontología
Botánica
Carboniferous
Fedekurtzia
Gondwana
pteridosperms
taxonomy
title_short Revision of Fedekurtzia (pteridosperm) and allied fronds from the Carboniferous of Gondwana
title_full Revision of Fedekurtzia (pteridosperm) and allied fronds from the Carboniferous of Gondwana
title_fullStr Revision of Fedekurtzia (pteridosperm) and allied fronds from the Carboniferous of Gondwana
title_full_unstemmed Revision of Fedekurtzia (pteridosperm) and allied fronds from the Carboniferous of Gondwana
title_sort Revision of Fedekurtzia (pteridosperm) and allied fronds from the Carboniferous of Gondwana
dc.creator.none.fl_str_mv Coturel, Eliana Paula
Césari, Silvia N.
author Coturel, Eliana Paula
author_facet Coturel, Eliana Paula
Césari, Silvia N.
author_role author
author2 Césari, Silvia N.
author2_role author
dc.subject.none.fl_str_mv Paleontología
Botánica
Carboniferous
Fedekurtzia
Gondwana
pteridosperms
taxonomy
topic Paleontología
Botánica
Carboniferous
Fedekurtzia
Gondwana
pteridosperms
taxonomy
dc.description.none.fl_txt_mv Carboniferous foliage of Fedekurtzia Argentina (Kurtz) Archangelsky from Gondwana is systematically described and revised. The frond is reconstructed based on specimens of the late Serpukhovian-Bashkirian Nothorhacopteris/Botrychiopsis/Ginkgophyllum flora of western Argentina, especially from the Jejenes, Tupe and Volcán formations. The whole-frond reconstruction emphasizes the variation in pinnule shape throughout the basal, medial and distal sections of the frond. The basalmost rachis possesses cyclopteroid pinnules grading to pinnae with obovate to wedge-shaped pinnules at the medial section of the frond. Distal pinnae are shorter, bearing imbricate and more dissected pinnules. Specimens from the same type locality from which F. Argentina comes, previously assigned to Triphyllopteris cuyana Leguizamón & Vega, are reassigned to F. Argentina, as well as ovuliferous and microsporangiate structures in organic connection. Two decades ago a revision of the German Triphyllopteris genus rejected T. cuyana as representative of the taxon, and the Argentinian specimens remained as indeterminate "triphyllopteroid" fronds. The ovulate organ Polycalyx Vega & Archangelsky is considered to be in organic connection with vegetative fragments of F. Argentina, and its cupulate character is discussed. Pollen organs represented by multi-forked axes bearing fusiform sporangia of Rinconadia Vega are also in organic attachment and included in the Fedekurtzia Argentina reconstruction. The pollen or prepollen grains are trilete and with granulate sculpture. The paper presents a comparison with Botrychiopsis weissiana Kurtz emend. Archangelsky & Arrondo, which differs in its rounded and entire-margin pinnules. Similar specimens from Australia formerly described as Rhacopteris, Sphenopteridium and Archaeopteris and currently included in Fedekurtzia intermedia Rigby share morphological characters with the Argentinian species. A revision of the Australian material is necessary to confirm synonymy. Fedekurtzia belongs to the pteridosperms based on the reproductive organs and is here assigned to Austrocalyxaceae. Its reconstruction now constitutes one of the most complete seed-ferns known from the Carboniferous of Gondwana.
Facultad de Ciencias Naturales y Museo
description Carboniferous foliage of Fedekurtzia Argentina (Kurtz) Archangelsky from Gondwana is systematically described and revised. The frond is reconstructed based on specimens of the late Serpukhovian-Bashkirian Nothorhacopteris/Botrychiopsis/Ginkgophyllum flora of western Argentina, especially from the Jejenes, Tupe and Volcán formations. The whole-frond reconstruction emphasizes the variation in pinnule shape throughout the basal, medial and distal sections of the frond. The basalmost rachis possesses cyclopteroid pinnules grading to pinnae with obovate to wedge-shaped pinnules at the medial section of the frond. Distal pinnae are shorter, bearing imbricate and more dissected pinnules. Specimens from the same type locality from which F. Argentina comes, previously assigned to Triphyllopteris cuyana Leguizamón & Vega, are reassigned to F. Argentina, as well as ovuliferous and microsporangiate structures in organic connection. Two decades ago a revision of the German Triphyllopteris genus rejected T. cuyana as representative of the taxon, and the Argentinian specimens remained as indeterminate "triphyllopteroid" fronds. The ovulate organ Polycalyx Vega & Archangelsky is considered to be in organic connection with vegetative fragments of F. Argentina, and its cupulate character is discussed. Pollen organs represented by multi-forked axes bearing fusiform sporangia of Rinconadia Vega are also in organic attachment and included in the Fedekurtzia Argentina reconstruction. The pollen or prepollen grains are trilete and with granulate sculpture. The paper presents a comparison with Botrychiopsis weissiana Kurtz emend. Archangelsky & Arrondo, which differs in its rounded and entire-margin pinnules. Similar specimens from Australia formerly described as Rhacopteris, Sphenopteridium and Archaeopteris and currently included in Fedekurtzia intermedia Rigby share morphological characters with the Argentinian species. A revision of the Australian material is necessary to confirm synonymy. Fedekurtzia belongs to the pteridosperms based on the reproductive organs and is here assigned to Austrocalyxaceae. Its reconstruction now constitutes one of the most complete seed-ferns known from the Carboniferous of Gondwana.
publishDate 2017
dc.date.none.fl_str_mv 2017
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dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/issn/0001-6594
info:eu-repo/semantics/altIdentifier/doi/10.1515/acpa-2017-0013
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by-nc-nd/4.0/
Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0)
eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by-nc-nd/4.0/
Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0)
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