First Miocene record of Akaniaceae in Patagonia (Argentina): a fossil wood from the early Miocene Santa Cruz formation and its palaeobiogeographical Implications

Autores
Brea, Mariana; Zucol, Alejandro F.; Bargo, M. Susana; Fernícola, Juan Carlos; Vizcaíno, Sergio Fabián
Año de publicación
2017
Idioma
español castellano
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Today, Akaniaceae are confined to south-eastern Queensland and north-eastern New South Wales (Australia), southeastern China and northern Vietnam. Akanioxylon santacrucensis gen. and sp. nov. is described as the first fossil wood of Akaniaceae from the early Miocene Santa Cruz Formation (c. 18–16 Ma; Burdigalian) on the Atlantic coast of Santa Cruz Province, Argentina. The diagnostic features are growth rings inconspicuous, with most latewood vessels only slightly narrower than earlywood vessels; diffuse porous wood; mainly solitary vessels, occasionally radial or tangential multiples and clusters; mainly simple, occasionally reticulate and rarely scalariform with many interconnections between bars perforation plates; bordered, minute to small intervessel pits; axial parenchyma scanty paratracheal and apotracheal diffuse; vessel-ray parenchyma pits with much reduced borders to apparently simple; vessel-axial parenchyma pits scalariform or transitional; mainly multiseriate (four to six cells wide) and rare uniseriate rays, heterocellular, occasionally crystals in ray cells; septate and non-septate fibres with simple to minutely bordered pits. These features resemble the extant Akania and Bretschneidera. The eco-anatomical analysis suggests that this fossil wood grew under temperate to warm-temperate and semi-arid climatic conditions. This record of Akania/Bretschneidera-like wood in South America reinforces the existence of an old relationship with the Australasia flora. The discovery of Akaniaceae in the Santa Cruz Formation extends the record of the taxon in South America c. 30 Ma and 10°S in latitude and suggests that the family was widespread in Patagonia as a component of forests developed in a frost-free humid biome in South American at mid to high latitudes.
Facultad de Ciencias Naturales y Museo
Materia
Ciencias Naturales
Early Miocene fossil woods
High latitudes
Santacrucian
South America
Nivel de accesibilidad
acceso abierto
Condiciones de uso
http://creativecommons.org/licenses/by-nc-sa/4.0/
Repositorio
SEDICI (UNLP)
Institución
Universidad Nacional de La Plata
OAI Identificador
oai:sedici.unlp.edu.ar:10915/75025
Acceder
id SEDICI_5f6c4891daf91e4ba57b7dc27236ee16
oai_identifier_str oai:sedici.unlp.edu.ar:10915/75025
network_acronym_str SEDICI
repository_id_str 1329
network_name_str SEDICI (UNLP)
spelling First Miocene record of Akaniaceae in Patagonia (Argentina): a fossil wood from the early Miocene Santa Cruz formation and its palaeobiogeographical ImplicationsBrea, MarianaZucol, Alejandro F.Bargo, M. SusanaFernícola, Juan CarlosVizcaíno, Sergio FabiánCiencias NaturalesEarly Miocene fossil woodsHigh latitudesSantacrucianSouth AmericaToday, Akaniaceae are confined to south-eastern Queensland and north-eastern New South Wales (Australia), southeastern China and northern Vietnam. Akanioxylon santacrucensis gen. and sp. nov. is described as the first fossil wood of Akaniaceae from the early Miocene Santa Cruz Formation (c. 18–16 Ma; Burdigalian) on the Atlantic coast of Santa Cruz Province, Argentina. The diagnostic features are growth rings inconspicuous, with most latewood vessels only slightly narrower than earlywood vessels; diffuse porous wood; mainly solitary vessels, occasionally radial or tangential multiples and clusters; mainly simple, occasionally reticulate and rarely scalariform with many interconnections between bars perforation plates; bordered, minute to small intervessel pits; axial parenchyma scanty paratracheal and apotracheal diffuse; vessel-ray parenchyma pits with much reduced borders to apparently simple; vessel-axial parenchyma pits scalariform or transitional; mainly multiseriate (four to six cells wide) and rare uniseriate rays, heterocellular, occasionally crystals in ray cells; septate and non-septate fibres with simple to minutely bordered pits. These features resemble the extant Akania and Bretschneidera. The eco-anatomical analysis suggests that this fossil wood grew under temperate to warm-temperate and semi-arid climatic conditions. This record of Akania/Bretschneidera-like wood in South America reinforces the existence of an old relationship with the Australasia flora. The discovery of Akaniaceae in the Santa Cruz Formation extends the record of the taxon in South America c. 30 Ma and 10°S in latitude and suggests that the family was widespread in Patagonia as a component of forests developed in a frost-free humid biome in South American at mid to high latitudes.Facultad de Ciencias Naturales y Museo2017info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfhttp://sedici.unlp.edu.ar/handle/10915/75025spainfo:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by-nc-sa/4.0/Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2025-09-29T11:13:00Zoai:sedici.unlp.edu.ar:10915/75025Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-09-29 11:13:00.349SEDICI (UNLP) - Universidad Nacional de La Platafalse
dc.title.none.fl_str_mv First Miocene record of Akaniaceae in Patagonia (Argentina): a fossil wood from the early Miocene Santa Cruz formation and its palaeobiogeographical Implications
title First Miocene record of Akaniaceae in Patagonia (Argentina): a fossil wood from the early Miocene Santa Cruz formation and its palaeobiogeographical Implications
spellingShingle First Miocene record of Akaniaceae in Patagonia (Argentina): a fossil wood from the early Miocene Santa Cruz formation and its palaeobiogeographical Implications
Brea, Mariana
Ciencias Naturales
Early Miocene fossil woods
High latitudes
Santacrucian
South America
title_short First Miocene record of Akaniaceae in Patagonia (Argentina): a fossil wood from the early Miocene Santa Cruz formation and its palaeobiogeographical Implications
title_full First Miocene record of Akaniaceae in Patagonia (Argentina): a fossil wood from the early Miocene Santa Cruz formation and its palaeobiogeographical Implications
title_fullStr First Miocene record of Akaniaceae in Patagonia (Argentina): a fossil wood from the early Miocene Santa Cruz formation and its palaeobiogeographical Implications
title_full_unstemmed First Miocene record of Akaniaceae in Patagonia (Argentina): a fossil wood from the early Miocene Santa Cruz formation and its palaeobiogeographical Implications
title_sort First Miocene record of Akaniaceae in Patagonia (Argentina): a fossil wood from the early Miocene Santa Cruz formation and its palaeobiogeographical Implications
dc.creator.none.fl_str_mv Brea, Mariana
Zucol, Alejandro F.
Bargo, M. Susana
Fernícola, Juan Carlos
Vizcaíno, Sergio Fabián
author Brea, Mariana
author_facet Brea, Mariana
Zucol, Alejandro F.
Bargo, M. Susana
Fernícola, Juan Carlos
Vizcaíno, Sergio Fabián
author_role author
author2 Zucol, Alejandro F.
Bargo, M. Susana
Fernícola, Juan Carlos
Vizcaíno, Sergio Fabián
author2_role author
author
author
author
dc.subject.none.fl_str_mv Ciencias Naturales
Early Miocene fossil woods
High latitudes
Santacrucian
South America
topic Ciencias Naturales
Early Miocene fossil woods
High latitudes
Santacrucian
South America
dc.description.none.fl_txt_mv Today, Akaniaceae are confined to south-eastern Queensland and north-eastern New South Wales (Australia), southeastern China and northern Vietnam. Akanioxylon santacrucensis gen. and sp. nov. is described as the first fossil wood of Akaniaceae from the early Miocene Santa Cruz Formation (c. 18–16 Ma; Burdigalian) on the Atlantic coast of Santa Cruz Province, Argentina. The diagnostic features are growth rings inconspicuous, with most latewood vessels only slightly narrower than earlywood vessels; diffuse porous wood; mainly solitary vessels, occasionally radial or tangential multiples and clusters; mainly simple, occasionally reticulate and rarely scalariform with many interconnections between bars perforation plates; bordered, minute to small intervessel pits; axial parenchyma scanty paratracheal and apotracheal diffuse; vessel-ray parenchyma pits with much reduced borders to apparently simple; vessel-axial parenchyma pits scalariform or transitional; mainly multiseriate (four to six cells wide) and rare uniseriate rays, heterocellular, occasionally crystals in ray cells; septate and non-septate fibres with simple to minutely bordered pits. These features resemble the extant Akania and Bretschneidera. The eco-anatomical analysis suggests that this fossil wood grew under temperate to warm-temperate and semi-arid climatic conditions. This record of Akania/Bretschneidera-like wood in South America reinforces the existence of an old relationship with the Australasia flora. The discovery of Akaniaceae in the Santa Cruz Formation extends the record of the taxon in South America c. 30 Ma and 10°S in latitude and suggests that the family was widespread in Patagonia as a component of forests developed in a frost-free humid biome in South American at mid to high latitudes.
Facultad de Ciencias Naturales y Museo
description Today, Akaniaceae are confined to south-eastern Queensland and north-eastern New South Wales (Australia), southeastern China and northern Vietnam. Akanioxylon santacrucensis gen. and sp. nov. is described as the first fossil wood of Akaniaceae from the early Miocene Santa Cruz Formation (c. 18–16 Ma; Burdigalian) on the Atlantic coast of Santa Cruz Province, Argentina. The diagnostic features are growth rings inconspicuous, with most latewood vessels only slightly narrower than earlywood vessels; diffuse porous wood; mainly solitary vessels, occasionally radial or tangential multiples and clusters; mainly simple, occasionally reticulate and rarely scalariform with many interconnections between bars perforation plates; bordered, minute to small intervessel pits; axial parenchyma scanty paratracheal and apotracheal diffuse; vessel-ray parenchyma pits with much reduced borders to apparently simple; vessel-axial parenchyma pits scalariform or transitional; mainly multiseriate (four to six cells wide) and rare uniseriate rays, heterocellular, occasionally crystals in ray cells; septate and non-septate fibres with simple to minutely bordered pits. These features resemble the extant Akania and Bretschneidera. The eco-anatomical analysis suggests that this fossil wood grew under temperate to warm-temperate and semi-arid climatic conditions. This record of Akania/Bretschneidera-like wood in South America reinforces the existence of an old relationship with the Australasia flora. The discovery of Akaniaceae in the Santa Cruz Formation extends the record of the taxon in South America c. 30 Ma and 10°S in latitude and suggests that the family was widespread in Patagonia as a component of forests developed in a frost-free humid biome in South American at mid to high latitudes.
publishDate 2017
dc.date.none.fl_str_mv 2017
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/10915/75025
url http://sedici.unlp.edu.ar/handle/10915/75025
dc.language.none.fl_str_mv spa
language spa
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by-nc-sa/4.0/
Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by-nc-sa/4.0/
Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
dc.format.none.fl_str_mv application/pdf
dc.source.none.fl_str_mv reponame:SEDICI (UNLP)
instname:Universidad Nacional de La Plata
instacron:UNLP
reponame_str SEDICI (UNLP)
collection SEDICI (UNLP)
instname_str Universidad Nacional de La Plata
instacron_str UNLP
institution UNLP
repository.name.fl_str_mv SEDICI (UNLP) - Universidad Nacional de La Plata
repository.mail.fl_str_mv alira@sedici.unlp.edu.ar
_version_ 1844616000336560128
score 13.070432

Publicaciones similares