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dc.contributor.author
Gnaedinger, Silvia Cristina
dc.contributor.author
Cariglino, Barbara
dc.contributor.author
Zavattieri, Ana Maria
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Monti, Mariana
dc.contributor.author
Gutierrez, Pedro Raul
dc.date.available
2021-09-10T18:54:26Z
dc.date.issued
2020-11
dc.identifier.citation
Gnaedinger, Silvia Cristina; Cariglino, Barbara; Zavattieri, Ana Maria; Monti, Mariana; Gutierrez, Pedro Raul; Neoarthropitys gondwanaensis gen. nov. et sp. nov. from the Middle Triassic of Gondwana: an intermediate stage in the anatomical trend of Equisetalean stems; Elsevier Science; Review of Palaeobotany and Palynology; 282; 11-2020; 1-19
dc.identifier.issn
0034-6667
dc.identifier.uri
http://hdl.handle.net/11336/140135
dc.description.abstract
A new petrified stem from the Middle Triassic Quebrada de los Fósiles Formation (Puesto Viejo Group, San Rafael Basin) in Mendoza Province, central-western Argentina, is described. The specimen shows affinities with fossil and extant Sphenophyta, such as the presence of a medullar cavity and primary xylem with carinal canal. A new genus and species – Neoarthropitys gondwanaensis – is established based on the presence of a secondary xylem with interfascicular rays and fascicular wedges, and the development of a mesarch–endarch primary xylem. These anatomical features allow differentiating it from all previously known Equisetales taxa, showing an intermediate stage between Calamitaceae which is characterized by mesarch primary xylem and by presence of the secondary xylem, and the Equisetaceae having endarch primary xylem and lacking of secondary xylem. The presence of a mesarch–endarch primary xylem in the Triassic Argentinian specimen has phylogenetic value, appearing as an intermediate stage in the anatomical trends of Equisetales stems. Neoarthropitys gondwanaensis gen. nov. et sp. nov. has a set of equisetalean features not present in any other clade, supporting the idea that they were part of a distinct group. The presence of transfusion tracheid piths supports previous hypothesis that the plants recorded in the Quebrada de los Fósiles Formation grew in an ecologically disturbed environment by intermittent volcanic ash falls, in the floodplains of a high-sinuosity fluvial system under seasonally sub-humid climatic conditions.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Elsevier Science
dc.rights
info:eu-repo/semantics/restrictedAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
ARGENTINA
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NEOARTHROPITYS
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SAN RAFAEL BASIN
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SOUTHWEST GONDWANA
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SPHENOPSIDA
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STEM ANATOMY
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Paleontología
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Ciencias de la Tierra y relacionadas con el Medio Ambiente
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CIENCIAS NATURALES Y EXACTAS
dc.title
Neoarthropitys gondwanaensis gen. nov. et sp. nov. from the Middle Triassic of Gondwana: an intermediate stage in the anatomical trend of Equisetalean stems
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2021-09-07T18:12:40Z
dc.journal.volume
282
dc.journal.pagination
1-19
dc.journal.pais
Países Bajos
dc.journal.ciudad
Amsterdam
dc.description.fil
Fil: Gnaedinger, Silvia Cristina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Nordeste. Centro de Ecología Aplicada del Litoral. Universidad Nacional del Nordeste. Centro de Ecología Aplicada del Litoral; Argentina
dc.description.fil
Fil: Cariglino, Barbara. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales "Bernardino Rivadavia"; Argentina
dc.description.fil
Fil: Zavattieri, Ana Maria. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mendoza. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales. Provincia de Mendoza. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales. Universidad Nacional de Cuyo. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales; Argentina
dc.description.fil
Fil: Monti, Mariana. YPF - Tecnología; Argentina
dc.description.fil
Fil: Gutierrez, Pedro Raul. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales "Bernardino Rivadavia"; Argentina
dc.journal.title
Review of Palaeobotany and Palynology
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1016/j.revpalbo.2020.104298
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/abs/pii/S0034666720301573
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