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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Autor principal:	Ottone, E.G.
Formato:	JOUR
Materias:	Argentina Plants Sistematics Triassic fossil assemblage paleobotany paleoecology plant taxonomy San Juan [Argentina] South America Coniferales Coniferophyta Corystospermales Cycadales Cycadeoidales Dicroidium Dicroidium odontopteroides Equisetophyta Neocalamites Obtusifolium Pseudoctenis Taeniopteris
Acceso en línea:	http://hdl.handle.net/20.500.12110/paper_00027014_v43_n2_p477_Ottone
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

id	todo:paper_00027014_v43_n2_p477_Ottone
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spelling	todo:paper_00027014_v43_n2_p477_Ottone2023-10-03T13:52:59Z Triassic plants from the Rincón Blanco Group, San Juan Province, Argentina Ottone, E.G. 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. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar 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, E.G. 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.
format	JOUR
author	Ottone, E.G.
author_facet	Ottone, E.G.
author_sort	Ottone, E.G.
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
url	http://hdl.handle.net/20.500.12110/paper_00027014_v43_n2_p477_Ottone
work_keys_str_mv	AT ottoneeg triassicplantsfromtherinconblancogroupsanjuanprovinceargentina
_version_	1807319767990665216

Triassic plants from the Rincón Blanco Group, San Juan Province, Argentina

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