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
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/200664

id CONICETDig_913b04ad8c9e71ac896914b261c127cb
oai_identifier_str oai:ri.conicet.gov.ar:11336/200664
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling 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 info:eu-repo/semantics/altIdentifier/url/https://www.peapaleontologica.org.ar/index.php/peapa/article/view/392
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.coverage.none.fl_str_mv Internacional
dc.publisher.none.fl_str_mv Asociación Paleontológica Argentina
publisher.none.fl_str_mv Asociación Paleontológica Argentina
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_ 1846082898650726400
score 13.22299