Three new taxa for the Miocene Xyloflora of the San José Formation, Tucumán, Argentina
This paper describes two new genera and three new species of fossil wood assigned to dicotyledonous angiosperms, from the locality of Tiu Punco, where the San José Formation (middle Miocene) outcrops in the Santa María Valley, Tucumán Province, Argentina. The samples, collected from fluvial-lacustri...
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| Formato: | Artículo revista |
| Lenguaje: | Español |
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Facultad de Ciencias Exactas y Naturales y Agrimensura
2026
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| Acceso en línea: | https://revistas.unne.edu.ar/index.php/fce/article/view/8844 |
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I48-R154-article-88442026-02-06T16:17:38Z Three new taxa for the Miocene Xyloflora of the San José Formation, Tucumán, Argentina Tres taxones nuevos para la Xiloflora del Mioceno de la Formación San José, Tucumán, Argentina Baez, Johanna Crisafulli, Alexandra Martinez, Ramona Mercedes Formación San José Mioceno medio Leños Fósiles Fabaceae Bignoniaceae Combretaceae San José Formation middle Miocene Fossil Woods Fabaceae Bignoniaceae Combretaceae This paper describes two new genera and three new species of fossil wood assigned to dicotyledonous angiosperms, from the locality of Tiu Punco, where the San José Formation (middle Miocene) outcrops in the Santa María Valley, Tucumán Province, Argentina. The samples, collected from fluvial-lacustrine levels, were anatomically analysed and are related to the Fabaceae, Bignoniaceae and Combretaceae. These findings provide key evidence regarding the floristic composition and ecological conditions of Miocene ecosystems in north-western Argentina. Their palaeoenvironmental implications and relevance to the Santa María Group are discussed, highlighting the continuity and diversity of the vegetation cover in this geological sequence. This study contributes to our understanding of the eco-anatomical evolution of Neogene vegetation in South America and strengthens the regional palaeobotanical record. El presente trabajo da a conocer dos nuevos géneros y tres especies nuevas de maderas fósiles asignadas a angiospermas dicotiledóneas, procedentes de la localidad de Tiu Punco donde aflora la Formación San José (Mioceno medio), en el valle de Santa María, provincia de Tucumán, Argentina. Las muestras, recolectadas en niveles fluvio-lacustres, fueron analizadas anatómicamente y son afines a las Fabaceae, Bignoniaceae y Combretaceae. Estos hallazgos aportan evidencia clave sobre la composición florística y las condiciones ecológicas de los ecosistemas miocénicos del noroeste argentino. A su vez, se discuten sus implicancias paleoambientales y su relevancia en el Grupo Santa María, destacando la continuidad y diversidad de la cubierta vegetal en esta secuencia geológica. El estudio contribuye a la comprensión de la evolución ecoanatómica de la vegetación neógena en Sudamérica y fortalece el registro paleobotánico regional. Facultad de Ciencias Exactas y Naturales y Agrimensura 2026-02-06 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion application/pdf text/html https://revistas.unne.edu.ar/index.php/fce/article/view/8844 10.30972/fac.3528844 FACENA; Vol. 35 Núm. 2 (2025); 223 - 253 1851-507X 0325-4216 spa https://revistas.unne.edu.ar/index.php/fce/article/view/8844/8846 https://revistas.unne.edu.ar/index.php/fce/article/view/8844/8847 Derechos de autor 2026 Johanna Baez, Alexandra Crisafulli, Ramona Mercedes Martinez http://creativecommons.org/licenses/by-nc/4.0 |
| institution |
Universidad Nacional del Nordeste |
| institution_str |
I-48 |
| repository_str |
R-154 |
| container_title_str |
Revistas UNNE - Universidad Nacional del Noroeste (UNNE) |
| language |
Español |
| format |
Artículo revista |
| topic |
Formación San José Mioceno medio Leños Fósiles Fabaceae Bignoniaceae Combretaceae San José Formation middle Miocene Fossil Woods Fabaceae Bignoniaceae Combretaceae |
| spellingShingle |
Formación San José Mioceno medio Leños Fósiles Fabaceae Bignoniaceae Combretaceae San José Formation middle Miocene Fossil Woods Fabaceae Bignoniaceae Combretaceae Baez, Johanna Crisafulli, Alexandra Martinez, Ramona Mercedes Three new taxa for the Miocene Xyloflora of the San José Formation, Tucumán, Argentina |
| topic_facet |
Formación San José Mioceno medio Leños Fósiles Fabaceae Bignoniaceae Combretaceae San José Formation middle Miocene Fossil Woods Fabaceae Bignoniaceae Combretaceae |
| author |
Baez, Johanna Crisafulli, Alexandra Martinez, Ramona Mercedes |
| author_facet |
Baez, Johanna Crisafulli, Alexandra Martinez, Ramona Mercedes |
| author_sort |
Baez, Johanna |
| title |
Three new taxa for the Miocene Xyloflora of the San José Formation, Tucumán, Argentina |
| title_short |
Three new taxa for the Miocene Xyloflora of the San José Formation, Tucumán, Argentina |
| title_full |
Three new taxa for the Miocene Xyloflora of the San José Formation, Tucumán, Argentina |
| title_fullStr |
Three new taxa for the Miocene Xyloflora of the San José Formation, Tucumán, Argentina |
| title_full_unstemmed |
Three new taxa for the Miocene Xyloflora of the San José Formation, Tucumán, Argentina |
| title_sort |
three new taxa for the miocene xyloflora of the san josé formation, tucumán, argentina |
| description |
This paper describes two new genera and three new species of fossil wood assigned to dicotyledonous angiosperms, from the locality of Tiu Punco, where the San José Formation (middle Miocene) outcrops in the Santa María Valley, Tucumán Province, Argentina. The samples, collected from fluvial-lacustrine levels, were anatomically analysed and are related to the Fabaceae, Bignoniaceae and Combretaceae. These findings provide key evidence regarding the floristic composition and ecological conditions of Miocene ecosystems in north-western Argentina. Their palaeoenvironmental implications and relevance to the Santa María Group are discussed, highlighting the continuity and diversity of the vegetation cover in this geological sequence. This study contributes to our understanding of the eco-anatomical evolution of Neogene vegetation in South America and strengthens the regional palaeobotanical record. |
| publisher |
Facultad de Ciencias Exactas y Naturales y Agrimensura |
| publishDate |
2026 |
| url |
https://revistas.unne.edu.ar/index.php/fce/article/view/8844 |
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