A new vesselless angiosperm stem with a cambial variant from the Upper Cretaceous of Antarctica

Autores
Pipo, María Laura; Iglesias, Ari; Bodnar, Josefina
Año de publicación
2020
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
We sectioned a permineralized stem preserved in marine calcareous concretions from the Campanian (Upper Cretaceous) of James Ross Island, Antarctic Peninsula using the cellulose-acetate peel technique. The material is a slender stem displaying a combination of characters such as: (i) absence of vessels and axial parenchyma, (ii) presence of a cambial variant which produces axial vascular elements in segments (AVES pattern), and (iii) elongated upright ray cells. This character combination allows us to assign this fossil to family Chloranthaceae and to relate it to an extant genus Sarcandra. Consequently we describe Sarcandraxylon sanjosense gen. et sp. nov., representing the first vegetative fossil of Chloranthaceae—a basal angiosperm family with a fossil record extending back into the Early Cretaceous and dominated by pollen grains and a limited number of reproductive mesofossils. Besides doubtfully assigned leaves, there are no reported Cretaceous macrofossils of Chloranthaceae, which hinders our understanding of the overall pattern of morphological evolution for the family. The new fossil constitutes the first fossil occurrence of the Sarcandra clade in high latitudes of Western Gondwana. The particular wood anatomy and small diameter suggest a new plant habit (sub-shrub) for the physiognomy of the Cretaceous Antarctic floras.
Fil: Pipo, María Laura. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte. Instituto de Investigaciones en Biodiversidad y Medioambiente. Universidad Nacional del Comahue. Centro Regional Universidad Bariloche. Instituto de Investigaciones en Biodiversidad y Medioambiente; Argentina
Fil: Iglesias, Ari. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte. Instituto de Investigaciones en Biodiversidad y Medioambiente. Universidad Nacional del Comahue. Centro Regional Universidad Bariloche. Instituto de Investigaciones en Biodiversidad y Medioambiente; Argentina
Fil: Bodnar, Josefina. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. Área Paleobotánica; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata; Argentina
Materia
ANGIOSPERMAE
ANTARCTICA
CAMBIAL VARIANT
CAMPANIAN
CHLORANTHACEAE
CHLORANTHALES
JAMES ROSS ISLAND
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:11336/136234
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/136234
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling A new vesselless angiosperm stem with a cambial variant from the Upper Cretaceous of AntarcticaPipo, María LauraIglesias, AriBodnar, JosefinaANGIOSPERMAEANTARCTICACAMBIAL VARIANTCAMPANIANCHLORANTHACEAECHLORANTHALESJAMES ROSS ISLANDhttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1We sectioned a permineralized stem preserved in marine calcareous concretions from the Campanian (Upper Cretaceous) of James Ross Island, Antarctic Peninsula using the cellulose-acetate peel technique. The material is a slender stem displaying a combination of characters such as: (i) absence of vessels and axial parenchyma, (ii) presence of a cambial variant which produces axial vascular elements in segments (AVES pattern), and (iii) elongated upright ray cells. This character combination allows us to assign this fossil to family Chloranthaceae and to relate it to an extant genus Sarcandra. Consequently we describe Sarcandraxylon sanjosense gen. et sp. nov., representing the first vegetative fossil of Chloranthaceae—a basal angiosperm family with a fossil record extending back into the Early Cretaceous and dominated by pollen grains and a limited number of reproductive mesofossils. Besides doubtfully assigned leaves, there are no reported Cretaceous macrofossils of Chloranthaceae, which hinders our understanding of the overall pattern of morphological evolution for the family. The new fossil constitutes the first fossil occurrence of the Sarcandra clade in high latitudes of Western Gondwana. The particular wood anatomy and small diameter suggest a new plant habit (sub-shrub) for the physiognomy of the Cretaceous Antarctic floras.Fil: Pipo, María Laura. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte. Instituto de Investigaciones en Biodiversidad y Medioambiente. Universidad Nacional del Comahue. Centro Regional Universidad Bariloche. Instituto de Investigaciones en Biodiversidad y Medioambiente; ArgentinaFil: Iglesias, Ari. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte. Instituto de Investigaciones en Biodiversidad y Medioambiente. Universidad Nacional del Comahue. Centro Regional Universidad Bariloche. Instituto de Investigaciones en Biodiversidad y Medioambiente; ArgentinaFil: Bodnar, Josefina. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. Área Paleobotánica; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata; ArgentinaPolish Academy of Sciences. Institute of Paleobiology2020-05info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/136234Pipo, María Laura; Iglesias, Ari; Bodnar, Josefina; A new vesselless angiosperm stem with a cambial variant from the Upper Cretaceous of Antarctica; Polish Academy of Sciences. Institute of Paleobiology; Acta Palaeontologica Polonica; 65; 5-2020; 261-2720567-79201732-2421CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/http://www.app.pan.pl/article/item/app006972019.htmlinfo:eu-repo/semantics/altIdentifier/doi/10.4202/app.00697.2019info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:41:39Zoai:ri.conicet.gov.ar:11336/136234instacron: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:34982025-09-29 10:41:39.955CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv A new vesselless angiosperm stem with a cambial variant from the Upper Cretaceous of Antarctica
title A new vesselless angiosperm stem with a cambial variant from the Upper Cretaceous of Antarctica
spellingShingle A new vesselless angiosperm stem with a cambial variant from the Upper Cretaceous of Antarctica
Pipo, María Laura
ANGIOSPERMAE
ANTARCTICA
CAMBIAL VARIANT
CAMPANIAN
CHLORANTHACEAE
CHLORANTHALES
JAMES ROSS ISLAND
title_short A new vesselless angiosperm stem with a cambial variant from the Upper Cretaceous of Antarctica
title_full A new vesselless angiosperm stem with a cambial variant from the Upper Cretaceous of Antarctica
title_fullStr A new vesselless angiosperm stem with a cambial variant from the Upper Cretaceous of Antarctica
title_full_unstemmed A new vesselless angiosperm stem with a cambial variant from the Upper Cretaceous of Antarctica
title_sort A new vesselless angiosperm stem with a cambial variant from the Upper Cretaceous of Antarctica
dc.creator.none.fl_str_mv Pipo, María Laura
Iglesias, Ari
Bodnar, Josefina
author Pipo, María Laura
author_facet Pipo, María Laura
Iglesias, Ari
Bodnar, Josefina
author_role author
author2 Iglesias, Ari
Bodnar, Josefina
author2_role author
author
dc.subject.none.fl_str_mv ANGIOSPERMAE
ANTARCTICA
CAMBIAL VARIANT
CAMPANIAN
CHLORANTHACEAE
CHLORANTHALES
JAMES ROSS ISLAND
topic ANGIOSPERMAE
ANTARCTICA
CAMBIAL VARIANT
CAMPANIAN
CHLORANTHACEAE
CHLORANTHALES
JAMES ROSS ISLAND
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.5
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv We sectioned a permineralized stem preserved in marine calcareous concretions from the Campanian (Upper Cretaceous) of James Ross Island, Antarctic Peninsula using the cellulose-acetate peel technique. The material is a slender stem displaying a combination of characters such as: (i) absence of vessels and axial parenchyma, (ii) presence of a cambial variant which produces axial vascular elements in segments (AVES pattern), and (iii) elongated upright ray cells. This character combination allows us to assign this fossil to family Chloranthaceae and to relate it to an extant genus Sarcandra. Consequently we describe Sarcandraxylon sanjosense gen. et sp. nov., representing the first vegetative fossil of Chloranthaceae—a basal angiosperm family with a fossil record extending back into the Early Cretaceous and dominated by pollen grains and a limited number of reproductive mesofossils. Besides doubtfully assigned leaves, there are no reported Cretaceous macrofossils of Chloranthaceae, which hinders our understanding of the overall pattern of morphological evolution for the family. The new fossil constitutes the first fossil occurrence of the Sarcandra clade in high latitudes of Western Gondwana. The particular wood anatomy and small diameter suggest a new plant habit (sub-shrub) for the physiognomy of the Cretaceous Antarctic floras.
Fil: Pipo, María Laura. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte. Instituto de Investigaciones en Biodiversidad y Medioambiente. Universidad Nacional del Comahue. Centro Regional Universidad Bariloche. Instituto de Investigaciones en Biodiversidad y Medioambiente; Argentina
Fil: Iglesias, Ari. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte. Instituto de Investigaciones en Biodiversidad y Medioambiente. Universidad Nacional del Comahue. Centro Regional Universidad Bariloche. Instituto de Investigaciones en Biodiversidad y Medioambiente; Argentina
Fil: Bodnar, Josefina. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. Área Paleobotánica; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata; Argentina
description We sectioned a permineralized stem preserved in marine calcareous concretions from the Campanian (Upper Cretaceous) of James Ross Island, Antarctic Peninsula using the cellulose-acetate peel technique. The material is a slender stem displaying a combination of characters such as: (i) absence of vessels and axial parenchyma, (ii) presence of a cambial variant which produces axial vascular elements in segments (AVES pattern), and (iii) elongated upright ray cells. This character combination allows us to assign this fossil to family Chloranthaceae and to relate it to an extant genus Sarcandra. Consequently we describe Sarcandraxylon sanjosense gen. et sp. nov., representing the first vegetative fossil of Chloranthaceae—a basal angiosperm family with a fossil record extending back into the Early Cretaceous and dominated by pollen grains and a limited number of reproductive mesofossils. Besides doubtfully assigned leaves, there are no reported Cretaceous macrofossils of Chloranthaceae, which hinders our understanding of the overall pattern of morphological evolution for the family. The new fossil constitutes the first fossil occurrence of the Sarcandra clade in high latitudes of Western Gondwana. The particular wood anatomy and small diameter suggest a new plant habit (sub-shrub) for the physiognomy of the Cretaceous Antarctic floras.
publishDate 2020
dc.date.none.fl_str_mv 2020-05
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/11336/136234
Pipo, María Laura; Iglesias, Ari; Bodnar, Josefina; A new vesselless angiosperm stem with a cambial variant from the Upper Cretaceous of Antarctica; Polish Academy of Sciences. Institute of Paleobiology; Acta Palaeontologica Polonica; 65; 5-2020; 261-272
0567-7920
1732-2421
CONICET Digital
CONICET
url http://hdl.handle.net/11336/136234
identifier_str_mv Pipo, María Laura; Iglesias, Ari; Bodnar, Josefina; A new vesselless angiosperm stem with a cambial variant from the Upper Cretaceous of Antarctica; Polish Academy of Sciences. Institute of Paleobiology; Acta Palaeontologica Polonica; 65; 5-2020; 261-272
0567-7920
1732-2421
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/http://www.app.pan.pl/article/item/app006972019.html
info:eu-repo/semantics/altIdentifier/doi/10.4202/app.00697.2019
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
dc.publisher.none.fl_str_mv Polish Academy of Sciences. Institute of Paleobiology
publisher.none.fl_str_mv Polish Academy of Sciences. Institute of Paleobiology
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 13.069144

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