A new species of Carlquistoxylon from the Early Cretaceous of Patagonia (Chubut province, Argentina): The oldest record of angiosperm wood from South America

Autores
Nunes, Cristina Isabel; Pujana, Roberto Roman; Escapa, Ignacio Hernán; Gandolfo, Maria Alejandra; Cúneo, Néstor Rubén
Año de publicación
2018
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
An angiospermous wood from the Lower Cretaceous (upper Albian) of the Cerro Barcino Formation, Chubut Group, central Patagonia, Argentina, is described. Its estimated minimum diameter is 40 cm and it is significant as the oldest known angiosperm wood for South America. It has indistinct growth ring boundaries, vessels solitary and in radial multiples, simple perforation plates, alternate intervessel pits, vessel-ray parenchyma pits oval to horizontally elongated, heterocellular rays, non-septate fibres, axial parenchyma absent, and abundant tyloses. Because this Albian wood has non-septate fibres we assign it to Carlquistoxylon, even though it has a general combination of characters similar to that of Paraphyllanthoxylon, which has septate fibres. The number of vessels per radial multiple, vessel tangential diameter and frequency, vessel-ray parenchyma pitting, and absence of axial parenchyma distinguish the fossil described here from the only previously known species of Carlquistoxylon: Carlquistoxylon nacimientense; therefore, a new species is erected. Because of the close similarities between this new specimen and Paraphyllanthoxylon species, comparisons with all the species included in both genera are provided. Systematic affinities for this wood are discussed considering previous discussions for both Paraphyllanthoxylon and Carlquistoxylon affinities. As the oldest described angiosperm wood in South America to date, this specimen provides critical information on the diversity and growth habit of Cretaceous angiosperms from the Southern Hemisphere.
Fil: Nunes, Cristina Isabel. Museo Paleontológico Egidio Feruglio; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Pujana, Roberto Roman. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales "Bernardino Rivadavia"; Argentina
Fil: Escapa, Ignacio Hernán. Museo Paleontológico Egidio Feruglio; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Gandolfo, Maria Alejandra. Cornell University; Estados Unidos
Fil: Cúneo, Néstor Rubén. Museo Paleontológico Egidio Feruglio; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Materia
ALBIAN
ANGIOSPERM
CARLQUISTOXYLON
FOSSIL WOOD
PARAPHYLLANTHOXYLON
SOUTH AMERICA
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/117578
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/117578
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repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling A new species of Carlquistoxylon from the Early Cretaceous of Patagonia (Chubut province, Argentina): The oldest record of angiosperm wood from South AmericaNunes, Cristina IsabelPujana, Roberto RomanEscapa, Ignacio HernánGandolfo, Maria AlejandraCúneo, Néstor RubénALBIANANGIOSPERMCARLQUISTOXYLONFOSSIL WOODPARAPHYLLANTHOXYLONSOUTH AMERICAhttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1An angiospermous wood from the Lower Cretaceous (upper Albian) of the Cerro Barcino Formation, Chubut Group, central Patagonia, Argentina, is described. Its estimated minimum diameter is 40 cm and it is significant as the oldest known angiosperm wood for South America. It has indistinct growth ring boundaries, vessels solitary and in radial multiples, simple perforation plates, alternate intervessel pits, vessel-ray parenchyma pits oval to horizontally elongated, heterocellular rays, non-septate fibres, axial parenchyma absent, and abundant tyloses. Because this Albian wood has non-septate fibres we assign it to Carlquistoxylon, even though it has a general combination of characters similar to that of Paraphyllanthoxylon, which has septate fibres. The number of vessels per radial multiple, vessel tangential diameter and frequency, vessel-ray parenchyma pitting, and absence of axial parenchyma distinguish the fossil described here from the only previously known species of Carlquistoxylon: Carlquistoxylon nacimientense; therefore, a new species is erected. Because of the close similarities between this new specimen and Paraphyllanthoxylon species, comparisons with all the species included in both genera are provided. Systematic affinities for this wood are discussed considering previous discussions for both Paraphyllanthoxylon and Carlquistoxylon affinities. As the oldest described angiosperm wood in South America to date, this specimen provides critical information on the diversity and growth habit of Cretaceous angiosperms from the Southern Hemisphere.Fil: Nunes, Cristina Isabel. Museo Paleontológico Egidio Feruglio; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Pujana, Roberto Roman. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales "Bernardino Rivadavia"; ArgentinaFil: Escapa, Ignacio Hernán. Museo Paleontológico Egidio Feruglio; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Gandolfo, Maria Alejandra. Cornell University; Estados UnidosFil: Cúneo, Néstor Rubén. Museo Paleontológico Egidio Feruglio; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaInternational Association of Wood Anatomists2018-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/117578Nunes, Cristina Isabel; Pujana, Roberto Roman; Escapa, Ignacio Hernán; Gandolfo, Maria Alejandra; Cúneo, Néstor Rubén; A new species of Carlquistoxylon from the Early Cretaceous of Patagonia (Chubut province, Argentina): The oldest record of angiosperm wood from South America; International Association of Wood Anatomists; IAWA Journal; 39; 4; 1-2018; 406-4260928-1541CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1163/22941932-20170206info:eu-repo/semantics/altIdentifier/url/https://brill.com/view/journals/iawa/39/4/article-p406_5.xmlinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-10T13:01:17Zoai:ri.conicet.gov.ar:11336/117578instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-10 13:01:17.427CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv A new species of Carlquistoxylon from the Early Cretaceous of Patagonia (Chubut province, Argentina): The oldest record of angiosperm wood from South America
title A new species of Carlquistoxylon from the Early Cretaceous of Patagonia (Chubut province, Argentina): The oldest record of angiosperm wood from South America
spellingShingle A new species of Carlquistoxylon from the Early Cretaceous of Patagonia (Chubut province, Argentina): The oldest record of angiosperm wood from South America
Nunes, Cristina Isabel
ALBIAN
ANGIOSPERM
CARLQUISTOXYLON
FOSSIL WOOD
PARAPHYLLANTHOXYLON
SOUTH AMERICA
title_short A new species of Carlquistoxylon from the Early Cretaceous of Patagonia (Chubut province, Argentina): The oldest record of angiosperm wood from South America
title_full A new species of Carlquistoxylon from the Early Cretaceous of Patagonia (Chubut province, Argentina): The oldest record of angiosperm wood from South America
title_fullStr A new species of Carlquistoxylon from the Early Cretaceous of Patagonia (Chubut province, Argentina): The oldest record of angiosperm wood from South America
title_full_unstemmed A new species of Carlquistoxylon from the Early Cretaceous of Patagonia (Chubut province, Argentina): The oldest record of angiosperm wood from South America
title_sort A new species of Carlquistoxylon from the Early Cretaceous of Patagonia (Chubut province, Argentina): The oldest record of angiosperm wood from South America
dc.creator.none.fl_str_mv Nunes, Cristina Isabel
Pujana, Roberto Roman
Escapa, Ignacio Hernán
Gandolfo, Maria Alejandra
Cúneo, Néstor Rubén
author Nunes, Cristina Isabel
author_facet Nunes, Cristina Isabel
Pujana, Roberto Roman
Escapa, Ignacio Hernán
Gandolfo, Maria Alejandra
Cúneo, Néstor Rubén
author_role author
author2 Pujana, Roberto Roman
Escapa, Ignacio Hernán
Gandolfo, Maria Alejandra
Cúneo, Néstor Rubén
author2_role author
author
author
author
dc.subject.none.fl_str_mv ALBIAN
ANGIOSPERM
CARLQUISTOXYLON
FOSSIL WOOD
PARAPHYLLANTHOXYLON
SOUTH AMERICA
topic ALBIAN
ANGIOSPERM
CARLQUISTOXYLON
FOSSIL WOOD
PARAPHYLLANTHOXYLON
SOUTH AMERICA
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.5
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv An angiospermous wood from the Lower Cretaceous (upper Albian) of the Cerro Barcino Formation, Chubut Group, central Patagonia, Argentina, is described. Its estimated minimum diameter is 40 cm and it is significant as the oldest known angiosperm wood for South America. It has indistinct growth ring boundaries, vessels solitary and in radial multiples, simple perforation plates, alternate intervessel pits, vessel-ray parenchyma pits oval to horizontally elongated, heterocellular rays, non-septate fibres, axial parenchyma absent, and abundant tyloses. Because this Albian wood has non-septate fibres we assign it to Carlquistoxylon, even though it has a general combination of characters similar to that of Paraphyllanthoxylon, which has septate fibres. The number of vessels per radial multiple, vessel tangential diameter and frequency, vessel-ray parenchyma pitting, and absence of axial parenchyma distinguish the fossil described here from the only previously known species of Carlquistoxylon: Carlquistoxylon nacimientense; therefore, a new species is erected. Because of the close similarities between this new specimen and Paraphyllanthoxylon species, comparisons with all the species included in both genera are provided. Systematic affinities for this wood are discussed considering previous discussions for both Paraphyllanthoxylon and Carlquistoxylon affinities. As the oldest described angiosperm wood in South America to date, this specimen provides critical information on the diversity and growth habit of Cretaceous angiosperms from the Southern Hemisphere.
Fil: Nunes, Cristina Isabel. Museo Paleontológico Egidio Feruglio; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Pujana, Roberto Roman. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales "Bernardino Rivadavia"; Argentina
Fil: Escapa, Ignacio Hernán. Museo Paleontológico Egidio Feruglio; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Gandolfo, Maria Alejandra. Cornell University; Estados Unidos
Fil: Cúneo, Néstor Rubén. Museo Paleontológico Egidio Feruglio; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
description An angiospermous wood from the Lower Cretaceous (upper Albian) of the Cerro Barcino Formation, Chubut Group, central Patagonia, Argentina, is described. Its estimated minimum diameter is 40 cm and it is significant as the oldest known angiosperm wood for South America. It has indistinct growth ring boundaries, vessels solitary and in radial multiples, simple perforation plates, alternate intervessel pits, vessel-ray parenchyma pits oval to horizontally elongated, heterocellular rays, non-septate fibres, axial parenchyma absent, and abundant tyloses. Because this Albian wood has non-septate fibres we assign it to Carlquistoxylon, even though it has a general combination of characters similar to that of Paraphyllanthoxylon, which has septate fibres. The number of vessels per radial multiple, vessel tangential diameter and frequency, vessel-ray parenchyma pitting, and absence of axial parenchyma distinguish the fossil described here from the only previously known species of Carlquistoxylon: Carlquistoxylon nacimientense; therefore, a new species is erected. Because of the close similarities between this new specimen and Paraphyllanthoxylon species, comparisons with all the species included in both genera are provided. Systematic affinities for this wood are discussed considering previous discussions for both Paraphyllanthoxylon and Carlquistoxylon affinities. As the oldest described angiosperm wood in South America to date, this specimen provides critical information on the diversity and growth habit of Cretaceous angiosperms from the Southern Hemisphere.
publishDate 2018
dc.date.none.fl_str_mv 2018-01
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
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://hdl.handle.net/11336/117578
Nunes, Cristina Isabel; Pujana, Roberto Roman; Escapa, Ignacio Hernán; Gandolfo, Maria Alejandra; Cúneo, Néstor Rubén; A new species of Carlquistoxylon from the Early Cretaceous of Patagonia (Chubut province, Argentina): The oldest record of angiosperm wood from South America; International Association of Wood Anatomists; IAWA Journal; 39; 4; 1-2018; 406-426
0928-1541
CONICET Digital
CONICET
url http://hdl.handle.net/11336/117578
identifier_str_mv Nunes, Cristina Isabel; Pujana, Roberto Roman; Escapa, Ignacio Hernán; Gandolfo, Maria Alejandra; Cúneo, Néstor Rubén; A new species of Carlquistoxylon from the Early Cretaceous of Patagonia (Chubut province, Argentina): The oldest record of angiosperm wood from South America; International Association of Wood Anatomists; IAWA Journal; 39; 4; 1-2018; 406-426
0928-1541
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1163/22941932-20170206
info:eu-repo/semantics/altIdentifier/url/https://brill.com/view/journals/iawa/39/4/article-p406_5.xml
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
application/pdf
application/pdf
dc.publisher.none.fl_str_mv International Association of Wood Anatomists
publisher.none.fl_str_mv International Association of Wood Anatomists
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 12.48226

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