First record of Early Devonian (Lochkovian) flora from the Santa Rosa Formation - Alarache, Southern Bolivia

New information on plants and palynomorphs from Angosto de Alarache, South Bolivia, is presented. The plant remains appear at the base of the section. Dichotomizing sterile forms are assigned to Hostinella sp. and scarce stems terminated in spherical structures are interpreted as indetermined sporan...

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Detalles Bibliográficos
Autor principal: Noetinger, María Sol
Publicado: 2008
Materias:
Lochkovian
Miospores
Primitive plants
Southern Bolivia
Tarija Basin
abundance
flora
miospore
new record
paleoenvironment
palynology
palynomorph
Amazon Basin
Bolivia
South America
algae
Chitinozoa
Dictyotriletes emsiensis
Fungi
Hostinella
Tracheophyta
Urochitina loboi
Verrucosisporites
Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_16956133_v6_n2_p191_DiPasquo
http://hdl.handle.net/20.500.12110/paper_16956133_v6_n2_p191_DiPasquo
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id paper:paper_16956133_v6_n2_p191_DiPasquo
record_format dspace
spelling paper:paper_16956133_v6_n2_p191_DiPasquo2023-06-08T16:26:48Z First record of Early Devonian (Lochkovian) flora from the Santa Rosa Formation - Alarache, Southern Bolivia Noetinger, María Sol Lochkovian Miospores Primitive plants Southern Bolivia Tarija Basin abundance flora Lochkovian miospore new record paleoenvironment palynology palynomorph Amazon Basin Bolivia South America Tarija Basin algae Chitinozoa Dictyotriletes emsiensis Fungi Hostinella Tracheophyta Urochitina loboi Verrucosisporites New information on plants and palynomorphs from Angosto de Alarache, South Bolivia, is presented. The plant remains appear at the base of the section. Dichotomizing sterile forms are assigned to Hostinella sp. and scarce stems terminated in spherical structures are interpreted as indetermined sporangia. The palynological association 1 recovered from this level contains abundant phytodebris, trilete spores, few cryptospores, algae, very poorly preserved chitinozoans, and other elements (fungi, ?lichens). Trilete spores assignable to Apiculiretusispora sp., Punctatisporites sp. and Retusotriletes sp., are obtained from the maceration of some isolated sporangia. The dichotomous branching of the stems and the trilete spores recovered from the isolated sporangia support its tracheophyte affinity. The palynological assemblage 2, obtained three metres above, contains abundant phytodebris and more diverse palynomorphs. Two new species (Retusotriletes albarinii n. sp., Acinosporites macgregorii n. sp.) are described. Based on the presence of the trilete spores Dictyotriletes emsiensis (ALLEN) MCGREGOR, Retusotriletes maculatus MCGREGOR and CAMFIELD, Apiculiretusispora plicata (ALLEN) STREEL and the absence, mainly of Verrucosisporites polygonalis LANNINGER and Urochitina loboi VOLKHEIMER et al., we propose a Lochkovian age but restricted up to the Late not latest Lochkovian, and the correlation with the lower part of the Emsiensis Zone of the Amazon Basin and the MN Zone of Western Europe. The abundance of fragmented stems of varied size and parallel to bedding planes, along with the isolated sporangia in the plant assemblage suggests a short distance transportation under low energy conditions, probably from marginal palaeoenvironments to low energy marine settings. © UB-ICTJA. Fil:Noetinger, S. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2008 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_16956133_v6_n2_p191_DiPasquo http://hdl.handle.net/20.500.12110/paper_16956133_v6_n2_p191_DiPasquo
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Lochkovian
Miospores
Primitive plants
Southern Bolivia
Tarija Basin
abundance
flora
Lochkovian
miospore
new record
paleoenvironment
palynology
palynomorph
Amazon Basin
Bolivia
South America
Tarija Basin
algae
Chitinozoa
Dictyotriletes emsiensis
Fungi
Hostinella
Tracheophyta
Urochitina loboi
Verrucosisporites
spellingShingle Lochkovian
Miospores
Primitive plants
Southern Bolivia
Tarija Basin
abundance
flora
Lochkovian
miospore
new record
paleoenvironment
palynology
palynomorph
Amazon Basin
Bolivia
South America
Tarija Basin
algae
Chitinozoa
Dictyotriletes emsiensis
Fungi
Hostinella
Tracheophyta
Urochitina loboi
Verrucosisporites
Noetinger, María Sol
First record of Early Devonian (Lochkovian) flora from the Santa Rosa Formation - Alarache, Southern Bolivia
topic_facet Lochkovian
Miospores
Primitive plants
Southern Bolivia
Tarija Basin
abundance
flora
Lochkovian
miospore
new record
paleoenvironment
palynology
palynomorph
Amazon Basin
Bolivia
South America
Tarija Basin
algae
Chitinozoa
Dictyotriletes emsiensis
Fungi
Hostinella
Tracheophyta
Urochitina loboi
Verrucosisporites
description New information on plants and palynomorphs from Angosto de Alarache, South Bolivia, is presented. The plant remains appear at the base of the section. Dichotomizing sterile forms are assigned to Hostinella sp. and scarce stems terminated in spherical structures are interpreted as indetermined sporangia. The palynological association 1 recovered from this level contains abundant phytodebris, trilete spores, few cryptospores, algae, very poorly preserved chitinozoans, and other elements (fungi, ?lichens). Trilete spores assignable to Apiculiretusispora sp., Punctatisporites sp. and Retusotriletes sp., are obtained from the maceration of some isolated sporangia. The dichotomous branching of the stems and the trilete spores recovered from the isolated sporangia support its tracheophyte affinity. The palynological assemblage 2, obtained three metres above, contains abundant phytodebris and more diverse palynomorphs. Two new species (Retusotriletes albarinii n. sp., Acinosporites macgregorii n. sp.) are described. Based on the presence of the trilete spores Dictyotriletes emsiensis (ALLEN) MCGREGOR, Retusotriletes maculatus MCGREGOR and CAMFIELD, Apiculiretusispora plicata (ALLEN) STREEL and the absence, mainly of Verrucosisporites polygonalis LANNINGER and Urochitina loboi VOLKHEIMER et al., we propose a Lochkovian age but restricted up to the Late not latest Lochkovian, and the correlation with the lower part of the Emsiensis Zone of the Amazon Basin and the MN Zone of Western Europe. The abundance of fragmented stems of varied size and parallel to bedding planes, along with the isolated sporangia in the plant assemblage suggests a short distance transportation under low energy conditions, probably from marginal palaeoenvironments to low energy marine settings. © UB-ICTJA.
author Noetinger, María Sol
author_facet Noetinger, María Sol
author_sort Noetinger, María Sol
title First record of Early Devonian (Lochkovian) flora from the Santa Rosa Formation - Alarache, Southern Bolivia
title_short First record of Early Devonian (Lochkovian) flora from the Santa Rosa Formation - Alarache, Southern Bolivia
title_full First record of Early Devonian (Lochkovian) flora from the Santa Rosa Formation - Alarache, Southern Bolivia
title_fullStr First record of Early Devonian (Lochkovian) flora from the Santa Rosa Formation - Alarache, Southern Bolivia
title_full_unstemmed First record of Early Devonian (Lochkovian) flora from the Santa Rosa Formation - Alarache, Southern Bolivia
title_sort first record of early devonian (lochkovian) flora from the santa rosa formation - alarache, southern bolivia
publishDate 2008
url https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_16956133_v6_n2_p191_DiPasquo
http://hdl.handle.net/20.500.12110/paper_16956133_v6_n2_p191_DiPasquo
work_keys_str_mv AT noetingermariasol firstrecordofearlydevonianlochkovianflorafromthesantarosaformationalarachesouthernbolivia
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