Haplostigma baldisii sp. nov. a Devonian lycophyte from the Precordillera of San Juan, Argentina
Casts and moulds of a small lycophyte, Haplostigma baldisii sp. nov., are described and figured. They occur in Devonian shales of the Chigua Formation, sierra del Volcán, San Juan Province. The plants were herbaceous, unbranched, bearing closely spaced simple, short enations, forming wide rows, clos...
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1997
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Acceso en línea: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00027014_v34_n3_p275_Gutierez http://hdl.handle.net/20.500.12110/paper_00027014_v34_n3_p275_Gutierez |
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paper:paper_00027014_v34_n3_p275_Gutierez2023-06-08T14:21:59Z Haplostigma baldisii sp. nov. a Devonian lycophyte from the Precordillera of San Juan, Argentina Argentina Devonian Lycopsid Río Blanco Basin San Juan Taxonomy devonian Haplostigma baldisii lycopsid taxonomy Argentina, San Juan Casts and moulds of a small lycophyte, Haplostigma baldisii sp. nov., are described and figured. They occur in Devonian shales of the Chigua Formation, sierra del Volcán, San Juan Province. The plants were herbaceous, unbranched, bearing closely spaced simple, short enations, forming wide rows, closely spaced, alternate, with sigillarioid disposition (orthostichies). Enations exhibit subhexagonal bases of subcircular to transversely oval section and blunt to acute apex. Comments are made on the validity of the genus name Haplostigma Seward. The new species is compared to Devonian and Carboniferous species from Africa and Argentina. 1997 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00027014_v34_n3_p275_Gutierez http://hdl.handle.net/20.500.12110/paper_00027014_v34_n3_p275_Gutierez |
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 Devonian Lycopsid Río Blanco Basin San Juan Taxonomy devonian Haplostigma baldisii lycopsid taxonomy Argentina, San Juan |
spellingShingle |
Argentina Devonian Lycopsid Río Blanco Basin San Juan Taxonomy devonian Haplostigma baldisii lycopsid taxonomy Argentina, San Juan Haplostigma baldisii sp. nov. a Devonian lycophyte from the Precordillera of San Juan, Argentina |
topic_facet |
Argentina Devonian Lycopsid Río Blanco Basin San Juan Taxonomy devonian Haplostigma baldisii lycopsid taxonomy Argentina, San Juan |
description |
Casts and moulds of a small lycophyte, Haplostigma baldisii sp. nov., are described and figured. They occur in Devonian shales of the Chigua Formation, sierra del Volcán, San Juan Province. The plants were herbaceous, unbranched, bearing closely spaced simple, short enations, forming wide rows, closely spaced, alternate, with sigillarioid disposition (orthostichies). Enations exhibit subhexagonal bases of subcircular to transversely oval section and blunt to acute apex. Comments are made on the validity of the genus name Haplostigma Seward. The new species is compared to Devonian and Carboniferous species from Africa and Argentina. |
title |
Haplostigma baldisii sp. nov. a Devonian lycophyte from the Precordillera of San Juan, Argentina |
title_short |
Haplostigma baldisii sp. nov. a Devonian lycophyte from the Precordillera of San Juan, Argentina |
title_full |
Haplostigma baldisii sp. nov. a Devonian lycophyte from the Precordillera of San Juan, Argentina |
title_fullStr |
Haplostigma baldisii sp. nov. a Devonian lycophyte from the Precordillera of San Juan, Argentina |
title_full_unstemmed |
Haplostigma baldisii sp. nov. a Devonian lycophyte from the Precordillera of San Juan, Argentina |
title_sort |
haplostigma baldisii sp. nov. a devonian lycophyte from the precordillera of san juan, argentina |
publishDate |
1997 |
url |
https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00027014_v34_n3_p275_Gutierez http://hdl.handle.net/20.500.12110/paper_00027014_v34_n3_p275_Gutierez |
_version_ |
1768541823475646464 |