<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
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, Parametop...
Autores principales: | , , , |
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Formato: | Articulo |
Lenguaje: | Inglés |
Publicado: |
2019
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Materias: | |
Acceso en línea: | http://sedici.unlp.edu.ar/handle/10915/126458 |
Aporte de: |
id |
I19-R120-10915-126458 |
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record_format |
dspace |
institution |
Universidad Nacional de La Plata |
institution_str |
I-19 |
repository_str |
R-120 |
collection |
SEDICI (UNLP) |
language |
Inglés |
topic |
Ciencias Naturales Paleontology Geography Schinopsis balansae Metopium Anacardiaceae Vieja Astronium balansae Botany Taxon Cenozoic |
spellingShingle |
Ciencias Naturales Paleontology Geography Schinopsis balansae Metopium Anacardiaceae Vieja Astronium balansae Botany Taxon Cenozoic Franco, M. Jimena Moya, Eliana Brea, Mariana Martínez Martínez, Camila <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 |
topic_facet |
Ciencias Naturales Paleontology Geography Schinopsis balansae Metopium Anacardiaceae Vieja Astronium balansae Botany Taxon Cenozoic |
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. |
format |
Articulo Articulo |
author |
Franco, M. Jimena Moya, Eliana Brea, Mariana Martínez Martínez, Camila |
author_facet |
Franco, M. Jimena Moya, Eliana Brea, Mariana Martínez Martínez, Camila |
author_sort |
Franco, M. Jimena |
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 |
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 |
publishDate |
2019 |
url |
http://sedici.unlp.edu.ar/handle/10915/126458 |
work_keys_str_mv |
AT francomjimena iastroniumxyloniischinopsixyloniandiparametopioxyloningenfossilwoodsfromuppercenozoicofargentinataxonomicrevisionnewtaxonandnewrecords AT moyaeliana iastroniumxyloniischinopsixyloniandiparametopioxyloningenfossilwoodsfromuppercenozoicofargentinataxonomicrevisionnewtaxonandnewrecords AT breamariana iastroniumxyloniischinopsixyloniandiparametopioxyloningenfossilwoodsfromuppercenozoicofargentinataxonomicrevisionnewtaxonandnewrecords AT martinezmartinezcamila iastroniumxyloniischinopsixyloniandiparametopioxyloningenfossilwoodsfromuppercenozoicofargentinataxonomicrevisionnewtaxonandnewrecords |
bdutipo_str |
Repositorios |
_version_ |
1764820450738700289 |