A new taxa for dipteridaceae fronds from the paso flores formation, late triassic, Neuquén basin, Argentina
- Autores
- Gnaedinger, Silvia Cristina; Zavattieri, Ana Maria
- Año de publicación
- 2020
- Idioma
- inglés
- Tipo de recurso
- documento de conferencia
- Estado
- versión publicada
- Descripción
- Steril and fertil fronds of dipteridacean ferns from the Paso Flores Formation (Norian) at Cañadón de Pancho area (Neuquén Basin, Argentina) are described. The morphological characteristics are: fanshaped fronds dissected in two equal and opposite rachial arms; each rachial arm bearing more than 18 primary segments. The primary segments fused up to 1/3 of the total length of the preserved lamina, and the remaining part is free, linear-lanceolate in shape, showing ondulate to deeply dissected lobes margins (less than 2/3 in length of the secondary vein). Primary and secondary veins simple, whereas tertiary veins dichotomized and forming irregularly polygonal areoles. Sori exindusiate, arranged in two regular rows on either side of the primary veins, as well as on both sides of the base of the secondary veins. Sori are round in outline, each sorus consists of 45-60 or more sporangia. Mixed maturation of sporangia. The annulus of the sporangia is oblique and complete. These specimens share some morphological features of the fronds with the fossil genera Clathropteris Brongniart, 1828, Digitopteris Pott and Bomfleur, 2018, Thaumatopteris Goeppert, 1841 and, with some species of the Dictyophyllum Lindley and Hutton, 1834 as well as in the character soral, with one the current species of Dipteris Reinwardt. The Paso Flores specimens comprise an interesting mixture of features showing a unique combination that do not fit in the circumscription of any of the known and most abundant genera of Dipteridaceae. Thus, these fossil dipterid fern fronds suggest that they belong to a new taxonomic entity.
Fil: Gnaedinger, Silvia Cristina. 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
Fil: Zavattieri, Ana Maria. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mendoza. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales. Provincia de Mendoza. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales. Universidad Nacional de Cuyo. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales; Argentina
1° Reunión Virtual de Comunicaciones de la Asociación Paleontológica Argentina
Buenos Aires
Argentina
Asociación Paleontológica Argentina - Materia
-
DIPTERIDACEAE
PASO FLORES FORMATION
NEUQUEN BASIN
LATE TRIASSIC - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- https://creativecommons.org/licenses/by-nc/2.5/ar/
- Repositorio
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/200664
Ver los metadatos del registro completo
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A new taxa for dipteridaceae fronds from the paso flores formation, late triassic, Neuquén basin, ArgentinaGnaedinger, Silvia CristinaZavattieri, Ana MariaDIPTERIDACEAEPASO FLORES FORMATIONNEUQUEN BASINLATE TRIASSIChttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1Steril and fertil fronds of dipteridacean ferns from the Paso Flores Formation (Norian) at Cañadón de Pancho area (Neuquén Basin, Argentina) are described. The morphological characteristics are: fanshaped fronds dissected in two equal and opposite rachial arms; each rachial arm bearing more than 18 primary segments. The primary segments fused up to 1/3 of the total length of the preserved lamina, and the remaining part is free, linear-lanceolate in shape, showing ondulate to deeply dissected lobes margins (less than 2/3 in length of the secondary vein). Primary and secondary veins simple, whereas tertiary veins dichotomized and forming irregularly polygonal areoles. Sori exindusiate, arranged in two regular rows on either side of the primary veins, as well as on both sides of the base of the secondary veins. Sori are round in outline, each sorus consists of 45-60 or more sporangia. Mixed maturation of sporangia. The annulus of the sporangia is oblique and complete. These specimens share some morphological features of the fronds with the fossil genera Clathropteris Brongniart, 1828, Digitopteris Pott and Bomfleur, 2018, Thaumatopteris Goeppert, 1841 and, with some species of the Dictyophyllum Lindley and Hutton, 1834 as well as in the character soral, with one the current species of Dipteris Reinwardt. The Paso Flores specimens comprise an interesting mixture of features showing a unique combination that do not fit in the circumscription of any of the known and most abundant genera of Dipteridaceae. Thus, these fossil dipterid fern fronds suggest that they belong to a new taxonomic entity.Fil: Gnaedinger, Silvia Cristina. 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; ArgentinaFil: Zavattieri, Ana Maria. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mendoza. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales. Provincia de Mendoza. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales. Universidad Nacional de Cuyo. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales; Argentina1° Reunión Virtual de Comunicaciones de la Asociación Paleontológica ArgentinaBuenos AiresArgentinaAsociación Paleontológica ArgentinaAsociación Paleontológica Argentina2020info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/conferenceObjectReuniónJournalhttp://purl.org/coar/resource_type/c_5794info:ar-repo/semantics/documentoDeConferenciaapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/200664A new taxa for dipteridaceae fronds from the paso flores formation, late triassic, Neuquén basin, Argentina; 1° Reunión Virtual de Comunicaciones de la Asociación Paleontológica Argentina; Buenos Aires; Argentina; 2020; 885 - 900CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://www.peapaleontologica.org.ar/index.php/peapa/article/view/392Internacionalinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-15T14:40:36Zoai:ri.conicet.gov.ar:11336/200664instacron: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:34982025-10-15 14:40:36.52CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse |
dc.title.none.fl_str_mv |
A new taxa for dipteridaceae fronds from the paso flores formation, late triassic, Neuquén basin, Argentina |
title |
A new taxa for dipteridaceae fronds from the paso flores formation, late triassic, Neuquén basin, Argentina |
spellingShingle |
A new taxa for dipteridaceae fronds from the paso flores formation, late triassic, Neuquén basin, Argentina Gnaedinger, Silvia Cristina DIPTERIDACEAE PASO FLORES FORMATION NEUQUEN BASIN LATE TRIASSIC |
title_short |
A new taxa for dipteridaceae fronds from the paso flores formation, late triassic, Neuquén basin, Argentina |
title_full |
A new taxa for dipteridaceae fronds from the paso flores formation, late triassic, Neuquén basin, Argentina |
title_fullStr |
A new taxa for dipteridaceae fronds from the paso flores formation, late triassic, Neuquén basin, Argentina |
title_full_unstemmed |
A new taxa for dipteridaceae fronds from the paso flores formation, late triassic, Neuquén basin, Argentina |
title_sort |
A new taxa for dipteridaceae fronds from the paso flores formation, late triassic, Neuquén basin, Argentina |
dc.creator.none.fl_str_mv |
Gnaedinger, Silvia Cristina Zavattieri, Ana Maria |
author |
Gnaedinger, Silvia Cristina |
author_facet |
Gnaedinger, Silvia Cristina Zavattieri, Ana Maria |
author_role |
author |
author2 |
Zavattieri, Ana Maria |
author2_role |
author |
dc.subject.none.fl_str_mv |
DIPTERIDACEAE PASO FLORES FORMATION NEUQUEN BASIN LATE TRIASSIC |
topic |
DIPTERIDACEAE PASO FLORES FORMATION NEUQUEN BASIN LATE TRIASSIC |
purl_subject.fl_str_mv |
https://purl.org/becyt/ford/1.5 https://purl.org/becyt/ford/1 |
dc.description.none.fl_txt_mv |
Steril and fertil fronds of dipteridacean ferns from the Paso Flores Formation (Norian) at Cañadón de Pancho area (Neuquén Basin, Argentina) are described. The morphological characteristics are: fanshaped fronds dissected in two equal and opposite rachial arms; each rachial arm bearing more than 18 primary segments. The primary segments fused up to 1/3 of the total length of the preserved lamina, and the remaining part is free, linear-lanceolate in shape, showing ondulate to deeply dissected lobes margins (less than 2/3 in length of the secondary vein). Primary and secondary veins simple, whereas tertiary veins dichotomized and forming irregularly polygonal areoles. Sori exindusiate, arranged in two regular rows on either side of the primary veins, as well as on both sides of the base of the secondary veins. Sori are round in outline, each sorus consists of 45-60 or more sporangia. Mixed maturation of sporangia. The annulus of the sporangia is oblique and complete. These specimens share some morphological features of the fronds with the fossil genera Clathropteris Brongniart, 1828, Digitopteris Pott and Bomfleur, 2018, Thaumatopteris Goeppert, 1841 and, with some species of the Dictyophyllum Lindley and Hutton, 1834 as well as in the character soral, with one the current species of Dipteris Reinwardt. The Paso Flores specimens comprise an interesting mixture of features showing a unique combination that do not fit in the circumscription of any of the known and most abundant genera of Dipteridaceae. Thus, these fossil dipterid fern fronds suggest that they belong to a new taxonomic entity. Fil: Gnaedinger, Silvia Cristina. 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 Fil: Zavattieri, Ana Maria. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mendoza. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales. Provincia de Mendoza. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales. Universidad Nacional de Cuyo. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales; Argentina 1° Reunión Virtual de Comunicaciones de la Asociación Paleontológica Argentina Buenos Aires Argentina Asociación Paleontológica Argentina |
description |
Steril and fertil fronds of dipteridacean ferns from the Paso Flores Formation (Norian) at Cañadón de Pancho area (Neuquén Basin, Argentina) are described. The morphological characteristics are: fanshaped fronds dissected in two equal and opposite rachial arms; each rachial arm bearing more than 18 primary segments. The primary segments fused up to 1/3 of the total length of the preserved lamina, and the remaining part is free, linear-lanceolate in shape, showing ondulate to deeply dissected lobes margins (less than 2/3 in length of the secondary vein). Primary and secondary veins simple, whereas tertiary veins dichotomized and forming irregularly polygonal areoles. Sori exindusiate, arranged in two regular rows on either side of the primary veins, as well as on both sides of the base of the secondary veins. Sori are round in outline, each sorus consists of 45-60 or more sporangia. Mixed maturation of sporangia. The annulus of the sporangia is oblique and complete. These specimens share some morphological features of the fronds with the fossil genera Clathropteris Brongniart, 1828, Digitopteris Pott and Bomfleur, 2018, Thaumatopteris Goeppert, 1841 and, with some species of the Dictyophyllum Lindley and Hutton, 1834 as well as in the character soral, with one the current species of Dipteris Reinwardt. The Paso Flores specimens comprise an interesting mixture of features showing a unique combination that do not fit in the circumscription of any of the known and most abundant genera of Dipteridaceae. Thus, these fossil dipterid fern fronds suggest that they belong to a new taxonomic entity. |
publishDate |
2020 |
dc.date.none.fl_str_mv |
2020 |
dc.type.none.fl_str_mv |
info:eu-repo/semantics/publishedVersion info:eu-repo/semantics/conferenceObject Reunión Journal 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/11336/200664 A new taxa for dipteridaceae fronds from the paso flores formation, late triassic, Neuquén basin, Argentina; 1° Reunión Virtual de Comunicaciones de la Asociación Paleontológica Argentina; Buenos Aires; Argentina; 2020; 885 - 900 CONICET Digital CONICET |
url |
http://hdl.handle.net/11336/200664 |
identifier_str_mv |
A new taxa for dipteridaceae fronds from the paso flores formation, late triassic, Neuquén basin, Argentina; 1° Reunión Virtual de Comunicaciones de la Asociación Paleontológica Argentina; Buenos Aires; Argentina; 2020; 885 - 900 CONICET Digital CONICET |
dc.language.none.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
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info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by-nc/2.5/ar/ |
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openAccess |
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Internacional |
dc.publisher.none.fl_str_mv |
Asociación Paleontológica Argentina |
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Asociación Paleontológica Argentina |
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