Triassic plants from the Rincón Blanco Group, San Juan Province, Argentina
Fluvial and lacustrine strata of the Portezuelo and Casa de Piedra Formations, Rincón Blanco Group, Middle to Upper Triassic of San Juan province, yield a distinctive taphoflora. The Portezuelo Formation plant remains are relatively scarce and mostly include peltasperms (Lepidopteris madagascariensi...
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Acceso en línea: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00027014_v43_n2_p477_Ottone http://hdl.handle.net/20.500.12110/paper_00027014_v43_n2_p477_Ottone |
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paper:paper_00027014_v43_n2_p477_Ottone2023-06-08T14:22:12Z Triassic plants from the Rincón Blanco Group, San Juan Province, Argentina Ottone, Eduardo Guillermo Argentina Plants Sistematics Triassic fossil assemblage paleobotany paleoecology plant taxonomy Triassic Argentina San Juan [Argentina] South America Coniferales Coniferophyta Corystospermales Cycadales Cycadeoidales Dicroidium Dicroidium odontopteroides Equisetophyta Neocalamites Obtusifolium Pseudoctenis Taeniopteris Fluvial and lacustrine strata of the Portezuelo and Casa de Piedra Formations, Rincón Blanco Group, Middle to Upper Triassic of San Juan province, yield a distinctive taphoflora. The Portezuelo Formation plant remains are relatively scarce and mostly include peltasperms (Lepidopteris madagascariensis Carpentier and Antevsia sp.), together with Bennettitales (Taeniopteris sp.), and probable Coniferales (Incertae sedis (ovule scale?) sp. B) and pteridosperm fronds (Incertae sedis sp. A). The fossil plant assemblage recovered from the Casa de Piedra Formation is more abundant and mainly includes Corystospermales (Dicroidium incisum (Du Toit) Anderson and Anderson, D. odontopteroides var. moltense Retallack, D. odontopteroides var. obtusifolium Johnston, D. odontopteroides var. remotum (Szajnocha) Retallack, Xylopteris densifolia (Du Toit) Frenguelli, X. remotipinnulia (Anderson and Anderson) comb. nov., X. rigida (Dun) Jain and Delevoyras, X. spinifolia (Tenison-Woods) Frenguelli and Zuberia zuberi (Szajnocha) Frenguelli, but also Sphenophyta (Neocalamites sp.) and Cycadales (Pseudoctenis sp. A and P. sp. B). The flora of the Rincón Blanco Group would chiefly represent a substratum of herbaceous and shrubby vegetation. Although the Portezuelo and Casa de Piedra Formations have been referred to the Cortaderitian and Florian stages, on the basis of regional correlations, the lack of diagnostic taxa difficult close comparisons of the Rincón Blanco Group flora with local biozones. © Asociación Paleontológica Argentina. Fil:Ottone, E.G. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2006 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00027014_v43_n2_p477_Ottone http://hdl.handle.net/20.500.12110/paper_00027014_v43_n2_p477_Ottone |
institution |
Universidad de Buenos Aires |
institution_str |
I-28 |
repository_str |
R-134 |
collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
topic |
Argentina Plants Sistematics Triassic fossil assemblage paleobotany paleoecology plant taxonomy Triassic Argentina San Juan [Argentina] South America Coniferales Coniferophyta Corystospermales Cycadales Cycadeoidales Dicroidium Dicroidium odontopteroides Equisetophyta Neocalamites Obtusifolium Pseudoctenis Taeniopteris |
spellingShingle |
Argentina Plants Sistematics Triassic fossil assemblage paleobotany paleoecology plant taxonomy Triassic Argentina San Juan [Argentina] South America Coniferales Coniferophyta Corystospermales Cycadales Cycadeoidales Dicroidium Dicroidium odontopteroides Equisetophyta Neocalamites Obtusifolium Pseudoctenis Taeniopteris Ottone, Eduardo Guillermo Triassic plants from the Rincón Blanco Group, San Juan Province, Argentina |
topic_facet |
Argentina Plants Sistematics Triassic fossil assemblage paleobotany paleoecology plant taxonomy Triassic Argentina San Juan [Argentina] South America Coniferales Coniferophyta Corystospermales Cycadales Cycadeoidales Dicroidium Dicroidium odontopteroides Equisetophyta Neocalamites Obtusifolium Pseudoctenis Taeniopteris |
description |
Fluvial and lacustrine strata of the Portezuelo and Casa de Piedra Formations, Rincón Blanco Group, Middle to Upper Triassic of San Juan province, yield a distinctive taphoflora. The Portezuelo Formation plant remains are relatively scarce and mostly include peltasperms (Lepidopteris madagascariensis Carpentier and Antevsia sp.), together with Bennettitales (Taeniopteris sp.), and probable Coniferales (Incertae sedis (ovule scale?) sp. B) and pteridosperm fronds (Incertae sedis sp. A). The fossil plant assemblage recovered from the Casa de Piedra Formation is more abundant and mainly includes Corystospermales (Dicroidium incisum (Du Toit) Anderson and Anderson, D. odontopteroides var. moltense Retallack, D. odontopteroides var. obtusifolium Johnston, D. odontopteroides var. remotum (Szajnocha) Retallack, Xylopteris densifolia (Du Toit) Frenguelli, X. remotipinnulia (Anderson and Anderson) comb. nov., X. rigida (Dun) Jain and Delevoyras, X. spinifolia (Tenison-Woods) Frenguelli and Zuberia zuberi (Szajnocha) Frenguelli, but also Sphenophyta (Neocalamites sp.) and Cycadales (Pseudoctenis sp. A and P. sp. B). The flora of the Rincón Blanco Group would chiefly represent a substratum of herbaceous and shrubby vegetation. Although the Portezuelo and Casa de Piedra Formations have been referred to the Cortaderitian and Florian stages, on the basis of regional correlations, the lack of diagnostic taxa difficult close comparisons of the Rincón Blanco Group flora with local biozones. © Asociación Paleontológica Argentina. |
author |
Ottone, Eduardo Guillermo |
author_facet |
Ottone, Eduardo Guillermo |
author_sort |
Ottone, Eduardo Guillermo |
title |
Triassic plants from the Rincón Blanco Group, San Juan Province, Argentina |
title_short |
Triassic plants from the Rincón Blanco Group, San Juan Province, Argentina |
title_full |
Triassic plants from the Rincón Blanco Group, San Juan Province, Argentina |
title_fullStr |
Triassic plants from the Rincón Blanco Group, San Juan Province, Argentina |
title_full_unstemmed |
Triassic plants from the Rincón Blanco Group, San Juan Province, Argentina |
title_sort |
triassic plants from the rincón blanco group, san juan province, argentina |
publishDate |
2006 |
url |
https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00027014_v43_n2_p477_Ottone http://hdl.handle.net/20.500.12110/paper_00027014_v43_n2_p477_Ottone |
work_keys_str_mv |
AT ottoneeduardoguillermo triassicplantsfromtherinconblancogroupsanjuanprovinceargentina |
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1768543634405195776 |