<i>Astroniumxylon</i>, <i>Schinopsixylon</i>, and <i>Parametopioxylon</i> n. gen. fossil woods from upper Cenozoic of Argentina: taxonomic revision, new taxon and new records

Autores
Franco, M. Jimena; Moya, Eliana; Brea, Mariana; Martínez Martínez, Camila
Año de publicación
2019
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
This paper presents new descriptions of Anacardiaceae fossil woods from the Ituzaingo Formation (late Cenozoic) at the Toma Vieja, Curtiembre, and Arroyo El Espinillo localities, Argentina. We describe eight silicified woods assigned to four different species in three genera, one of which, Parametopioxylon crystalliferum n. gen. n. sp., is new. Similarities between these three genera and the six Anacardiaceae species previously recorded from the late Cenozoic in northeastern Argentina are investigated using multivariate analysis techniques (correspondence and cluster analysis). Our study is based on 33 characters scored for 17 fossil specimens (10 Astroniumxylon Brea, Acenolaza, and Zucol 2001; five Schinopsixylon Lutz, 1979; and two Parametopioxylon n. gen.) and four extant species ( Astronium balansae Engl., Astronium urundeuva Engl., Schinopsis balansae Engl., and Metopium sp.). Our main goal is to determine the wood anatomical features useful for distinguishing among these species. Results of the multivariate analyses support the previous classification where Schinopsixylon is distinguished from Astroniumxylon by having exclusively paratracheal axial parenchyma, ≥30% multiseriate rays, and multiseriate rays that are ≥5 cells wide and commonly 301–400 μm in height. Additionally, we propose that Schinopsixylon heckii Lutz, 1979 is synonymous with S . herbstii Lutz, 1979. A diagnostic key for the fossil species studied is given. Wood anatomy of Anacardiaceae fossil woods from Argentina (late Cenozoic) suggests a warm, dry to semi-humid climate for this region, supporting previous studies.
Facultad de Ciencias Naturales y Museo
Materia
Ciencias Naturales
Paleontology
Geography
Schinopsis balansae
Metopium
Anacardiaceae
Vieja
Astronium balansae
Botany
Taxon
Cenozoic
Nivel de accesibilidad
acceso abierto
Condiciones de uso
http://creativecommons.org/licenses/by/4.0/
Repositorio
SEDICI (UNLP)
Institución
Universidad Nacional de La Plata
OAI Identificador
oai:sedici.unlp.edu.ar:10915/126458
Acceder
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repository_id_str 1329
network_name_str SEDICI (UNLP)
spelling <i>Astroniumxylon</i>, <i>Schinopsixylon</i>, and <i>Parametopioxylon</i> n. gen. fossil woods from upper Cenozoic of Argentina: taxonomic revision, new taxon and new recordsFranco, M. JimenaMoya, ElianaBrea, MarianaMartínez Martínez, CamilaCiencias NaturalesPaleontologyGeographySchinopsis balansaeMetopiumAnacardiaceaeViejaAstronium balansaeBotanyTaxonCenozoicThis paper presents new descriptions of Anacardiaceae fossil woods from the Ituzaingo Formation (late Cenozoic) at the Toma Vieja, Curtiembre, and Arroyo El Espinillo localities, Argentina. We describe eight silicified woods assigned to four different species in three genera, one of which, Parametopioxylon crystalliferum n. gen. n. sp., is new. Similarities between these three genera and the six Anacardiaceae species previously recorded from the late Cenozoic in northeastern Argentina are investigated using multivariate analysis techniques (correspondence and cluster analysis). Our study is based on 33 characters scored for 17 fossil specimens (10 Astroniumxylon Brea, Acenolaza, and Zucol 2001; five Schinopsixylon Lutz, 1979; and two Parametopioxylon n. gen.) and four extant species ( Astronium balansae Engl., Astronium urundeuva Engl., Schinopsis balansae Engl., and Metopium sp.). Our main goal is to determine the wood anatomical features useful for distinguishing among these species. Results of the multivariate analyses support the previous classification where Schinopsixylon is distinguished from Astroniumxylon by having exclusively paratracheal axial parenchyma, ≥30% multiseriate rays, and multiseriate rays that are ≥5 cells wide and commonly 301–400 μm in height. Additionally, we propose that Schinopsixylon heckii Lutz, 1979 is synonymous with S . herbstii Lutz, 1979. A diagnostic key for the fossil species studied is given. Wood anatomy of Anacardiaceae fossil woods from Argentina (late Cenozoic) suggests a warm, dry to semi-humid climate for this region, supporting previous studies.Facultad de Ciencias Naturales y Museo2019-12-17info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdf185-201http://sedici.unlp.edu.ar/handle/10915/126458enginfo:eu-repo/semantics/altIdentifier/issn/0022-3360info:eu-repo/semantics/altIdentifier/issn/1937-2337info:eu-repo/semantics/altIdentifier/doi/10.1017/jpa.2019.97info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by/4.0/Creative Commons Attribution 4.0 International (CC BY 4.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2025-10-15T11:22:11Zoai:sedici.unlp.edu.ar:10915/126458Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-10-15 11:22:12.099SEDICI (UNLP) - Universidad Nacional de La Platafalse
dc.title.none.fl_str_mv <i>Astroniumxylon</i>, <i>Schinopsixylon</i>, and <i>Parametopioxylon</i> n. gen. fossil woods from upper Cenozoic of Argentina: taxonomic revision, new taxon and new records
title <i>Astroniumxylon</i>, <i>Schinopsixylon</i>, and <i>Parametopioxylon</i> n. gen. fossil woods from upper Cenozoic of Argentina: taxonomic revision, new taxon and new records
spellingShingle <i>Astroniumxylon</i>, <i>Schinopsixylon</i>, and <i>Parametopioxylon</i> n. gen. fossil woods from upper Cenozoic of Argentina: taxonomic revision, new taxon and new records
Franco, M. Jimena
Ciencias Naturales
Paleontology
Geography
Schinopsis balansae
Metopium
Anacardiaceae
Vieja
Astronium balansae
Botany
Taxon
Cenozoic
title_short <i>Astroniumxylon</i>, <i>Schinopsixylon</i>, and <i>Parametopioxylon</i> n. gen. fossil woods from upper Cenozoic of Argentina: taxonomic revision, new taxon and new records
title_full <i>Astroniumxylon</i>, <i>Schinopsixylon</i>, and <i>Parametopioxylon</i> n. gen. fossil woods from upper Cenozoic of Argentina: taxonomic revision, new taxon and new records
title_fullStr <i>Astroniumxylon</i>, <i>Schinopsixylon</i>, and <i>Parametopioxylon</i> n. gen. fossil woods from upper Cenozoic of Argentina: taxonomic revision, new taxon and new records
title_full_unstemmed <i>Astroniumxylon</i>, <i>Schinopsixylon</i>, and <i>Parametopioxylon</i> n. gen. fossil woods from upper Cenozoic of Argentina: taxonomic revision, new taxon and new records
title_sort <i>Astroniumxylon</i>, <i>Schinopsixylon</i>, and <i>Parametopioxylon</i> n. gen. fossil woods from upper Cenozoic of Argentina: taxonomic revision, new taxon and new records
dc.creator.none.fl_str_mv Franco, M. Jimena
Moya, Eliana
Brea, Mariana
Martínez Martínez, Camila
author Franco, M. Jimena
author_facet Franco, M. Jimena
Moya, Eliana
Brea, Mariana
Martínez Martínez, Camila
author_role author
author2 Moya, Eliana
Brea, Mariana
Martínez Martínez, Camila
author2_role author
author
author
dc.subject.none.fl_str_mv Ciencias Naturales
Paleontology
Geography
Schinopsis balansae
Metopium
Anacardiaceae
Vieja
Astronium balansae
Botany
Taxon
Cenozoic
topic Ciencias Naturales
Paleontology
Geography
Schinopsis balansae
Metopium
Anacardiaceae
Vieja
Astronium balansae
Botany
Taxon
Cenozoic
dc.description.none.fl_txt_mv This paper presents new descriptions of Anacardiaceae fossil woods from the Ituzaingo Formation (late Cenozoic) at the Toma Vieja, Curtiembre, and Arroyo El Espinillo localities, Argentina. We describe eight silicified woods assigned to four different species in three genera, one of which, Parametopioxylon crystalliferum n. gen. n. sp., is new. Similarities between these three genera and the six Anacardiaceae species previously recorded from the late Cenozoic in northeastern Argentina are investigated using multivariate analysis techniques (correspondence and cluster analysis). Our study is based on 33 characters scored for 17 fossil specimens (10 Astroniumxylon Brea, Acenolaza, and Zucol 2001; five Schinopsixylon Lutz, 1979; and two Parametopioxylon n. gen.) and four extant species ( Astronium balansae Engl., Astronium urundeuva Engl., Schinopsis balansae Engl., and Metopium sp.). Our main goal is to determine the wood anatomical features useful for distinguishing among these species. Results of the multivariate analyses support the previous classification where Schinopsixylon is distinguished from Astroniumxylon by having exclusively paratracheal axial parenchyma, ≥30% multiseriate rays, and multiseriate rays that are ≥5 cells wide and commonly 301–400 μm in height. Additionally, we propose that Schinopsixylon heckii Lutz, 1979 is synonymous with S . herbstii Lutz, 1979. A diagnostic key for the fossil species studied is given. Wood anatomy of Anacardiaceae fossil woods from Argentina (late Cenozoic) suggests a warm, dry to semi-humid climate for this region, supporting previous studies.
Facultad de Ciencias Naturales y Museo
description This paper presents new descriptions of Anacardiaceae fossil woods from the Ituzaingo Formation (late Cenozoic) at the Toma Vieja, Curtiembre, and Arroyo El Espinillo localities, Argentina. We describe eight silicified woods assigned to four different species in three genera, one of which, Parametopioxylon crystalliferum n. gen. n. sp., is new. Similarities between these three genera and the six Anacardiaceae species previously recorded from the late Cenozoic in northeastern Argentina are investigated using multivariate analysis techniques (correspondence and cluster analysis). Our study is based on 33 characters scored for 17 fossil specimens (10 Astroniumxylon Brea, Acenolaza, and Zucol 2001; five Schinopsixylon Lutz, 1979; and two Parametopioxylon n. gen.) and four extant species ( Astronium balansae Engl., Astronium urundeuva Engl., Schinopsis balansae Engl., and Metopium sp.). Our main goal is to determine the wood anatomical features useful for distinguishing among these species. Results of the multivariate analyses support the previous classification where Schinopsixylon is distinguished from Astroniumxylon by having exclusively paratracheal axial parenchyma, ≥30% multiseriate rays, and multiseriate rays that are ≥5 cells wide and commonly 301–400 μm in height. Additionally, we propose that Schinopsixylon heckii Lutz, 1979 is synonymous with S . herbstii Lutz, 1979. A diagnostic key for the fossil species studied is given. Wood anatomy of Anacardiaceae fossil woods from Argentina (late Cenozoic) suggests a warm, dry to semi-humid climate for this region, supporting previous studies.
publishDate 2019
dc.date.none.fl_str_mv 2019-12-17
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Articulo
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://sedici.unlp.edu.ar/handle/10915/126458
url http://sedici.unlp.edu.ar/handle/10915/126458
dc.language.none.fl_str_mv eng
language eng
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info:eu-repo/semantics/altIdentifier/issn/1937-2337
info:eu-repo/semantics/altIdentifier/doi/10.1017/jpa.2019.97
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by/4.0/
Creative Commons Attribution 4.0 International (CC BY 4.0)
eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by/4.0/
Creative Commons Attribution 4.0 International (CC BY 4.0)
dc.format.none.fl_str_mv application/pdf
185-201
dc.source.none.fl_str_mv reponame:SEDICI (UNLP)
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reponame_str SEDICI (UNLP)
collection SEDICI (UNLP)
instname_str Universidad Nacional de La Plata
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institution UNLP
repository.name.fl_str_mv SEDICI (UNLP) - Universidad Nacional de La Plata
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