The triassic Taphoflora from Parana basin, southern Brazil: an overview
A Triassic Dicroidium Flora identified in the central region of the State of Rio Grande do Sul, Southern Brazil, represents an important biostratigraphic stage in the palaeofloristic succession of Parana basin. The megafloristic association composed of compressed leaves, fronds and seeds shows a pre...
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ftjcalvados:oai:ojs.c3sl.ufpr.br:article/11511 2023-05-15T13:52:38+02:00 The triassic Taphoflora from Parana basin, southern Brazil: an overview Sommer, Margot Guerra- Klepzig, Miriam Cazzulo 2000-09-30 application/pdf http://revistas.ufpr.br/rbg/article/view/11511 https://doi.org/10.5380/rbg.v30i3.11511 por por Zeppelini Editorial http://revistas.ufpr.br/rbg/article/view/11511/8009 Revista Brasileira de Geociências; v. 30, n. 3 (2000) 2177-4382 0375-7536 10.5380/rbg.v30i3 Dicroidium Flora; South Brazilian Gondwana; Anisian Ladinian info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 2000 ftjcalvados https://doi.org/10.5380/rbg.v30i3.11511 2017-12-04T10:09:30Z A Triassic Dicroidium Flora identified in the central region of the State of Rio Grande do Sul, Southern Brazil, represents an important biostratigraphic stage in the palaeofloristic succession of Parana basin. The megafloristic association composed of compressed leaves, fronds and seeds shows a predominance of the genus Dicroidium, with several species, and other important taxa like Neocalamites sp, Cladophlebis sp., Tetraptilon aff. heteromerum, Ginkgoites antarctica, Sphenobaiera sp, Podozamites sp, Nilssonia sp, Pteruchus sp and Carpolithus sp. Taking into account the stratigraphic distribution of different species of the genus Dicroidium, a biostratigraphic framework was previously established and an informal floristic interval, named "Dicroidium odontopteroides Flora" was proposed (Late Anisian to Late Ladinian, Middle Triassic). The general composition of the Dicroidium Flora in Rio Grande do Sul is similar to the "Dicroidietum odontopteroidium" characterized for Australasia corresponding to a forest association composed by trees, woody shrubs, ground cover and swamps growths. The presence of xilopteroid leaves indicates levels of water stressed substrate. The homogeneous composition of the assemblage, and the small size of leaves of the whole association in relation to the Dicroidium Flora of other Gondwana regions (e. g. Molteno Formation) seems to indicate particular drainage patterns prevailing during deposition of Santa Maria Formation. A Triassic Dicroidium Flora identified in the central region of the State of Rio Grande do Sul, Southern Brazil, represents an important biostratigraphic stage in the palaeofloristic succession of Parana basin. The megafloristic association composed of compressed leaves, fronds and seeds shows a predominance of the genus Dicroidium, with several species, and other important taxa like Neocalamites sp, Cladophlebis sp., Tetraptilon aff. heteromerum, Ginkgoites antarctica, Sphenobaiera sp, Podozamites sp, Nilssonia sp, Pteruchus sp and Carpolithus sp. Taking into account the stratigraphic distribution of different species of the genus Dicroidium, a biostratigraphic framework was previously established and an informal floristic interval, named "Dicroidium odontopteroides Flora" was proposed (Late Anisian to Late Ladinian, Middle Triassic). The general composition of the Dicroidium Flora in Rio Grande do Sul is similar to the "Dicroidietum odontopteroidium" characterized for Australasia corresponding to a forest association composed by trees, woody shrubs, ground cover and swamps growths. The presence of xilopteroid leaves indicates levels of water stressed substrate. The homogeneous composition of the assemblage, and the small size of leaves of the whole association in relation to the Dicroidium Flora of other Gondwana regions (e. g. Molteno Formation) seems to indicate particular drainage patterns prevailing during deposition of Santa Maria Formation. Article in Journal/Newspaper Antarc* Antarctica Biblioteca Digital de Periódicos da UFPR (Universidade Federal do Paraná) |
institution |
Open Polar |
collection |
Biblioteca Digital de Periódicos da UFPR (Universidade Federal do Paraná) |
op_collection_id |
ftjcalvados |
language |
Portuguese |
topic |
Dicroidium Flora; South Brazilian Gondwana; Anisian Ladinian |
spellingShingle |
Dicroidium Flora; South Brazilian Gondwana; Anisian Ladinian Sommer, Margot Guerra- Klepzig, Miriam Cazzulo The triassic Taphoflora from Parana basin, southern Brazil: an overview |
topic_facet |
Dicroidium Flora; South Brazilian Gondwana; Anisian Ladinian |
description |
A Triassic Dicroidium Flora identified in the central region of the State of Rio Grande do Sul, Southern Brazil, represents an important biostratigraphic stage in the palaeofloristic succession of Parana basin. The megafloristic association composed of compressed leaves, fronds and seeds shows a predominance of the genus Dicroidium, with several species, and other important taxa like Neocalamites sp, Cladophlebis sp., Tetraptilon aff. heteromerum, Ginkgoites antarctica, Sphenobaiera sp, Podozamites sp, Nilssonia sp, Pteruchus sp and Carpolithus sp. Taking into account the stratigraphic distribution of different species of the genus Dicroidium, a biostratigraphic framework was previously established and an informal floristic interval, named "Dicroidium odontopteroides Flora" was proposed (Late Anisian to Late Ladinian, Middle Triassic). The general composition of the Dicroidium Flora in Rio Grande do Sul is similar to the "Dicroidietum odontopteroidium" characterized for Australasia corresponding to a forest association composed by trees, woody shrubs, ground cover and swamps growths. The presence of xilopteroid leaves indicates levels of water stressed substrate. The homogeneous composition of the assemblage, and the small size of leaves of the whole association in relation to the Dicroidium Flora of other Gondwana regions (e. g. Molteno Formation) seems to indicate particular drainage patterns prevailing during deposition of Santa Maria Formation. A Triassic Dicroidium Flora identified in the central region of the State of Rio Grande do Sul, Southern Brazil, represents an important biostratigraphic stage in the palaeofloristic succession of Parana basin. The megafloristic association composed of compressed leaves, fronds and seeds shows a predominance of the genus Dicroidium, with several species, and other important taxa like Neocalamites sp, Cladophlebis sp., Tetraptilon aff. heteromerum, Ginkgoites antarctica, Sphenobaiera sp, Podozamites sp, Nilssonia sp, Pteruchus sp and Carpolithus sp. Taking into account the stratigraphic distribution of different species of the genus Dicroidium, a biostratigraphic framework was previously established and an informal floristic interval, named "Dicroidium odontopteroides Flora" was proposed (Late Anisian to Late Ladinian, Middle Triassic). The general composition of the Dicroidium Flora in Rio Grande do Sul is similar to the "Dicroidietum odontopteroidium" characterized for Australasia corresponding to a forest association composed by trees, woody shrubs, ground cover and swamps growths. The presence of xilopteroid leaves indicates levels of water stressed substrate. The homogeneous composition of the assemblage, and the small size of leaves of the whole association in relation to the Dicroidium Flora of other Gondwana regions (e. g. Molteno Formation) seems to indicate particular drainage patterns prevailing during deposition of Santa Maria Formation. |
format |
Article in Journal/Newspaper |
author |
Sommer, Margot Guerra- Klepzig, Miriam Cazzulo |
author_facet |
Sommer, Margot Guerra- Klepzig, Miriam Cazzulo |
author_sort |
Sommer, Margot Guerra- |
title |
The triassic Taphoflora from Parana basin, southern Brazil: an overview |
title_short |
The triassic Taphoflora from Parana basin, southern Brazil: an overview |
title_full |
The triassic Taphoflora from Parana basin, southern Brazil: an overview |
title_fullStr |
The triassic Taphoflora from Parana basin, southern Brazil: an overview |
title_full_unstemmed |
The triassic Taphoflora from Parana basin, southern Brazil: an overview |
title_sort |
triassic taphoflora from parana basin, southern brazil: an overview |
publisher |
Zeppelini Editorial |
publishDate |
2000 |
url |
http://revistas.ufpr.br/rbg/article/view/11511 https://doi.org/10.5380/rbg.v30i3.11511 |
genre |
Antarc* Antarctica |
genre_facet |
Antarc* Antarctica |
op_source |
Revista Brasileira de Geociências; v. 30, n. 3 (2000) 2177-4382 0375-7536 10.5380/rbg.v30i3 |
op_relation |
http://revistas.ufpr.br/rbg/article/view/11511/8009 |
op_doi |
https://doi.org/10.5380/rbg.v30i3.11511 |
_version_ |
1766257066776723456 |