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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Detalles Bibliográficos
Autores principales: Gutiérez, P.R., Archangelsky, S.
Formato: JOUR
Materias:
Argentina
Devonian
Lycopsid
Río Blanco Basin
San Juan
Taxonomy
devonian
Haplostigma baldisii
lycopsid
taxonomy
Argentina, San Juan
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_00027014_v34_n3_p275_Gutierez
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id todo:paper_00027014_v34_n3_p275_Gutierez
record_format dspace
spelling todo:paper_00027014_v34_n3_p275_Gutierez2023-10-03T13:52:36Z Haplostigma baldisii sp. nov. a Devonian lycophyte from the Precordillera of San Juan, Argentina Gutiérez, P.R. Archangelsky, S. 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. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar 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
Gutiérez, P.R.
Archangelsky, S.
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.
format JOUR
author Gutiérez, P.R.
Archangelsky, S.
author_facet Gutiérez, P.R.
Archangelsky, S.
author_sort Gutiérez, P.R.
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
url http://hdl.handle.net/20.500.12110/paper_00027014_v34_n3_p275_Gutierez
work_keys_str_mv AT gutierezpr haplostigmabaldisiispnovadevonianlycophytefromtheprecordilleraofsanjuanargentina
AT archangelskys haplostigmabaldisiispnovadevonianlycophytefromtheprecordilleraofsanjuanargentina
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