Evolution and relationships of the conifer seed cone telemachus: Evidence from the triassic of antarctica

Autores
Escapa, Ignacio Hernán; Decombeix, Anne-Laure; Taylor, Edith L.; Taylor, Thomas N.
Año de publicación
2010
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The seed cone Telemachus is known from several Triassic localities in Gondwana. New specimens from two localities in Antarctica provide additional information about the type species, Telemachus elongatus, based on details of morphology and anatomy revealed by using a modified transfer technique on the compressed plants. Seed cones of T. elongatus are up to 6.0 cm long and characterized by conspicuous, elongate bracts. A second Antarctic species, described here as Telemachus antarcticus, is segregated, based on a shorter bract and differences in cone size. Newly recognized features of the genus include the shape, size, and disposition of the ovules; vascularization of the ovuliferous complex; and scale and bract histology. As a result of this new information, it is now possible to compare Telemachus with the permineralized Middle Triassic conifer seed cone Parasciadopitys from the Central Transantarctic Mountains. The similarities between the two genera make it possible to relate organs in different preservational modes and to develop a more complete concept for this widely distributed Gondwana conifer. Placing the Telemachus plant within a phylogenetic context makes it possible to evaluate the relationship with other so-called transitional conifers, an informal group that has been interpreted as intermediate between Paleozoic and modern conifers.
Fil: Escapa, Ignacio Hernán. University of Kansas; Estados Unidos. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Decombeix, Anne-Laure. University of Kansas; Estados Unidos
Fil: Taylor, Edith L.. University of Kansas; Estados Unidos
Fil: Taylor, Thomas N.. University of Kansas; Estados Unidos
Materia
TRIASSIC
ANTARCTICA
CONIFERS
TELEMACHUS
EVOLUTION
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:11336/96162
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/96162
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Evolution and relationships of the conifer seed cone telemachus: Evidence from the triassic of antarcticaEscapa, Ignacio HernánDecombeix, Anne-LaureTaylor, Edith L.Taylor, Thomas N.TRIASSICANTARCTICACONIFERSTELEMACHUSEVOLUTIONhttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1The seed cone Telemachus is known from several Triassic localities in Gondwana. New specimens from two localities in Antarctica provide additional information about the type species, Telemachus elongatus, based on details of morphology and anatomy revealed by using a modified transfer technique on the compressed plants. Seed cones of T. elongatus are up to 6.0 cm long and characterized by conspicuous, elongate bracts. A second Antarctic species, described here as Telemachus antarcticus, is segregated, based on a shorter bract and differences in cone size. Newly recognized features of the genus include the shape, size, and disposition of the ovules; vascularization of the ovuliferous complex; and scale and bract histology. As a result of this new information, it is now possible to compare Telemachus with the permineralized Middle Triassic conifer seed cone Parasciadopitys from the Central Transantarctic Mountains. The similarities between the two genera make it possible to relate organs in different preservational modes and to develop a more complete concept for this widely distributed Gondwana conifer. Placing the Telemachus plant within a phylogenetic context makes it possible to evaluate the relationship with other so-called transitional conifers, an informal group that has been interpreted as intermediate between Paleozoic and modern conifers.Fil: Escapa, Ignacio Hernán. University of Kansas; Estados Unidos. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Decombeix, Anne-Laure. University of Kansas; Estados UnidosFil: Taylor, Edith L.. University of Kansas; Estados UnidosFil: Taylor, Thomas N.. University of Kansas; Estados UnidosUniversity of Chicago Press2010-06info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/96162Escapa, Ignacio Hernán; Decombeix, Anne-Laure; Taylor, Edith L.; Taylor, Thomas N.; Evolution and relationships of the conifer seed cone telemachus: Evidence from the triassic of antarctica; University of Chicago Press; International Journal of Plant Sciences; 171; 5; 6-2010; 560-5731058-5893CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://www.jstor.org/stable/10.1086/651948info:eu-repo/semantics/altIdentifier/doi/10.1086/651948info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T09:32:50Zoai:ri.conicet.gov.ar:11336/96162instacron: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 09:32:50.486CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Evolution and relationships of the conifer seed cone telemachus: Evidence from the triassic of antarctica
title Evolution and relationships of the conifer seed cone telemachus: Evidence from the triassic of antarctica
spellingShingle Evolution and relationships of the conifer seed cone telemachus: Evidence from the triassic of antarctica
Escapa, Ignacio Hernán
TRIASSIC
ANTARCTICA
CONIFERS
TELEMACHUS
EVOLUTION
title_short Evolution and relationships of the conifer seed cone telemachus: Evidence from the triassic of antarctica
title_full Evolution and relationships of the conifer seed cone telemachus: Evidence from the triassic of antarctica
title_fullStr Evolution and relationships of the conifer seed cone telemachus: Evidence from the triassic of antarctica
title_full_unstemmed Evolution and relationships of the conifer seed cone telemachus: Evidence from the triassic of antarctica
title_sort Evolution and relationships of the conifer seed cone telemachus: Evidence from the triassic of antarctica
dc.creator.none.fl_str_mv Escapa, Ignacio Hernán
Decombeix, Anne-Laure
Taylor, Edith L.
Taylor, Thomas N.
author Escapa, Ignacio Hernán
author_facet Escapa, Ignacio Hernán
Decombeix, Anne-Laure
Taylor, Edith L.
Taylor, Thomas N.
author_role author
author2 Decombeix, Anne-Laure
Taylor, Edith L.
Taylor, Thomas N.
author2_role author
author
author
dc.subject.none.fl_str_mv TRIASSIC
ANTARCTICA
CONIFERS
TELEMACHUS
EVOLUTION
topic TRIASSIC
ANTARCTICA
CONIFERS
TELEMACHUS
EVOLUTION
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.5
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv The seed cone Telemachus is known from several Triassic localities in Gondwana. New specimens from two localities in Antarctica provide additional information about the type species, Telemachus elongatus, based on details of morphology and anatomy revealed by using a modified transfer technique on the compressed plants. Seed cones of T. elongatus are up to 6.0 cm long and characterized by conspicuous, elongate bracts. A second Antarctic species, described here as Telemachus antarcticus, is segregated, based on a shorter bract and differences in cone size. Newly recognized features of the genus include the shape, size, and disposition of the ovules; vascularization of the ovuliferous complex; and scale and bract histology. As a result of this new information, it is now possible to compare Telemachus with the permineralized Middle Triassic conifer seed cone Parasciadopitys from the Central Transantarctic Mountains. The similarities between the two genera make it possible to relate organs in different preservational modes and to develop a more complete concept for this widely distributed Gondwana conifer. Placing the Telemachus plant within a phylogenetic context makes it possible to evaluate the relationship with other so-called transitional conifers, an informal group that has been interpreted as intermediate between Paleozoic and modern conifers.
Fil: Escapa, Ignacio Hernán. University of Kansas; Estados Unidos. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Decombeix, Anne-Laure. University of Kansas; Estados Unidos
Fil: Taylor, Edith L.. University of Kansas; Estados Unidos
Fil: Taylor, Thomas N.. University of Kansas; Estados Unidos
description The seed cone Telemachus is known from several Triassic localities in Gondwana. New specimens from two localities in Antarctica provide additional information about the type species, Telemachus elongatus, based on details of morphology and anatomy revealed by using a modified transfer technique on the compressed plants. Seed cones of T. elongatus are up to 6.0 cm long and characterized by conspicuous, elongate bracts. A second Antarctic species, described here as Telemachus antarcticus, is segregated, based on a shorter bract and differences in cone size. Newly recognized features of the genus include the shape, size, and disposition of the ovules; vascularization of the ovuliferous complex; and scale and bract histology. As a result of this new information, it is now possible to compare Telemachus with the permineralized Middle Triassic conifer seed cone Parasciadopitys from the Central Transantarctic Mountains. The similarities between the two genera make it possible to relate organs in different preservational modes and to develop a more complete concept for this widely distributed Gondwana conifer. Placing the Telemachus plant within a phylogenetic context makes it possible to evaluate the relationship with other so-called transitional conifers, an informal group that has been interpreted as intermediate between Paleozoic and modern conifers.
publishDate 2010
dc.date.none.fl_str_mv 2010-06
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/11336/96162
Escapa, Ignacio Hernán; Decombeix, Anne-Laure; Taylor, Edith L.; Taylor, Thomas N.; Evolution and relationships of the conifer seed cone telemachus: Evidence from the triassic of antarctica; University of Chicago Press; International Journal of Plant Sciences; 171; 5; 6-2010; 560-573
1058-5893
CONICET Digital
CONICET
url http://hdl.handle.net/11336/96162
identifier_str_mv Escapa, Ignacio Hernán; Decombeix, Anne-Laure; Taylor, Edith L.; Taylor, Thomas N.; Evolution and relationships of the conifer seed cone telemachus: Evidence from the triassic of antarctica; University of Chicago Press; International Journal of Plant Sciences; 171; 5; 6-2010; 560-573
1058-5893
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/https://www.jstor.org/stable/10.1086/651948
info:eu-repo/semantics/altIdentifier/doi/10.1086/651948
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 University of Chicago Press
publisher.none.fl_str_mv University of Chicago Press
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 13.070432

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