Nautilids from the upper cretaceous of the James Ross Basin, Antarctic Peninsula

Autores
Cichowolski, Marcela; Ambrosio, Alfredo; Concheyro, Graciela
Año de publicación
2005
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
To date, Cretaceous nautilids from the Antarctic Peninsula have received little attention and only a single species had been reported, Eutrephoceras simile Spath, from Seymour, Snow Hill, and James Ross islands. Currently, it is considered a synonym of Eutrephoceras subplicatum (Steinmann), which has also been described from the Upper Cretaceous of central Chile, southern Argentina and Angola. Here, we report and describe E. subplicatum in detail, based on specimens from the Lower Campanian–Maastrichtian of Vega, Seymour and James Ross islands, presenting, for the first time, embryonic conch features related to the palaeoecology of these organisms. The nauta of this species had a diameter of approximately 30 mm with 5–6 septa. In addition, we describe a new species, Eutrephoceras antarcticum, and one specimen assigned to the same genus in open nomenclature, both recovered from the Lower Campanian beds of James Ross Island.
Fil: Cichowolski, Marcela. Universidad de Buenos Aires; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Ambrosio, Alfredo. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales “Bernardino Rivadavia”; Argentina. Universidad de Buenos Aires; Argentina
Fil: Concheyro, Graciela. Ministerio de Relaciones Exteriores, Comercio Interno y Culto. Dirección Nacional del Antártico. Instituto Antártico Argentino; Argentina. Universidad de Buenos Aires; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Materia
CAMPANIAN
EMBRYONIC CONCH
EUTREPHOCERAS
MAASTRICHTIAN
PALAEOECOLOGY
SEYMOUR GROUP
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:11336/96152
Acceder
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repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Nautilids from the upper cretaceous of the James Ross Basin, Antarctic PeninsulaCichowolski, MarcelaAmbrosio, AlfredoConcheyro, GracielaCAMPANIANEMBRYONIC CONCHEUTREPHOCERASMAASTRICHTIANPALAEOECOLOGYSEYMOUR GROUPhttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1To date, Cretaceous nautilids from the Antarctic Peninsula have received little attention and only a single species had been reported, Eutrephoceras simile Spath, from Seymour, Snow Hill, and James Ross islands. Currently, it is considered a synonym of Eutrephoceras subplicatum (Steinmann), which has also been described from the Upper Cretaceous of central Chile, southern Argentina and Angola. Here, we report and describe E. subplicatum in detail, based on specimens from the Lower Campanian–Maastrichtian of Vega, Seymour and James Ross islands, presenting, for the first time, embryonic conch features related to the palaeoecology of these organisms. The nauta of this species had a diameter of approximately 30 mm with 5–6 septa. In addition, we describe a new species, Eutrephoceras antarcticum, and one specimen assigned to the same genus in open nomenclature, both recovered from the Lower Campanian beds of James Ross Island.Fil: Cichowolski, Marcela. Universidad de Buenos Aires; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Ambrosio, Alfredo. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales “Bernardino Rivadavia”; Argentina. Universidad de Buenos Aires; ArgentinaFil: Concheyro, Graciela. Ministerio de Relaciones Exteriores, Comercio Interno y Culto. Dirección Nacional del Antártico. Instituto Antártico Argentino; Argentina. Universidad de Buenos Aires; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaCambridge University Press2005-06info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/96152Cichowolski, Marcela; Ambrosio, Alfredo; Concheyro, Graciela; Nautilids from the upper cretaceous of the James Ross Basin, Antarctic Peninsula; Cambridge University Press; Antarctic Science; 17; 2; 6-2005; 267-2800954-1020CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://www.cambridge.org/core/journals/antarctic-science/article/nautilids-from-the-upper-cretaceous-of-the-james-ross-basin-antarctic-peninsula/6D3FF74B421AB373EE0794FFC90D64DFinfo:eu-repo/semantics/altIdentifier/doi/10.1017/S0954102005002671info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-10T13:15:40Zoai:ri.conicet.gov.ar:11336/96152instacron: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 13:15:40.631CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Nautilids from the upper cretaceous of the James Ross Basin, Antarctic Peninsula
title Nautilids from the upper cretaceous of the James Ross Basin, Antarctic Peninsula
spellingShingle Nautilids from the upper cretaceous of the James Ross Basin, Antarctic Peninsula
Cichowolski, Marcela
CAMPANIAN
EMBRYONIC CONCH
EUTREPHOCERAS
MAASTRICHTIAN
PALAEOECOLOGY
SEYMOUR GROUP
title_short Nautilids from the upper cretaceous of the James Ross Basin, Antarctic Peninsula
title_full Nautilids from the upper cretaceous of the James Ross Basin, Antarctic Peninsula
title_fullStr Nautilids from the upper cretaceous of the James Ross Basin, Antarctic Peninsula
title_full_unstemmed Nautilids from the upper cretaceous of the James Ross Basin, Antarctic Peninsula
title_sort Nautilids from the upper cretaceous of the James Ross Basin, Antarctic Peninsula
dc.creator.none.fl_str_mv Cichowolski, Marcela
Ambrosio, Alfredo
Concheyro, Graciela
author Cichowolski, Marcela
author_facet Cichowolski, Marcela
Ambrosio, Alfredo
Concheyro, Graciela
author_role author
author2 Ambrosio, Alfredo
Concheyro, Graciela
author2_role author
author
dc.subject.none.fl_str_mv CAMPANIAN
EMBRYONIC CONCH
EUTREPHOCERAS
MAASTRICHTIAN
PALAEOECOLOGY
SEYMOUR GROUP
topic CAMPANIAN
EMBRYONIC CONCH
EUTREPHOCERAS
MAASTRICHTIAN
PALAEOECOLOGY
SEYMOUR GROUP
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.5
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv To date, Cretaceous nautilids from the Antarctic Peninsula have received little attention and only a single species had been reported, Eutrephoceras simile Spath, from Seymour, Snow Hill, and James Ross islands. Currently, it is considered a synonym of Eutrephoceras subplicatum (Steinmann), which has also been described from the Upper Cretaceous of central Chile, southern Argentina and Angola. Here, we report and describe E. subplicatum in detail, based on specimens from the Lower Campanian–Maastrichtian of Vega, Seymour and James Ross islands, presenting, for the first time, embryonic conch features related to the palaeoecology of these organisms. The nauta of this species had a diameter of approximately 30 mm with 5–6 septa. In addition, we describe a new species, Eutrephoceras antarcticum, and one specimen assigned to the same genus in open nomenclature, both recovered from the Lower Campanian beds of James Ross Island.
Fil: Cichowolski, Marcela. Universidad de Buenos Aires; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Ambrosio, Alfredo. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales “Bernardino Rivadavia”; Argentina. Universidad de Buenos Aires; Argentina
Fil: Concheyro, Graciela. Ministerio de Relaciones Exteriores, Comercio Interno y Culto. Dirección Nacional del Antártico. Instituto Antártico Argentino; Argentina. Universidad de Buenos Aires; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
description To date, Cretaceous nautilids from the Antarctic Peninsula have received little attention and only a single species had been reported, Eutrephoceras simile Spath, from Seymour, Snow Hill, and James Ross islands. Currently, it is considered a synonym of Eutrephoceras subplicatum (Steinmann), which has also been described from the Upper Cretaceous of central Chile, southern Argentina and Angola. Here, we report and describe E. subplicatum in detail, based on specimens from the Lower Campanian–Maastrichtian of Vega, Seymour and James Ross islands, presenting, for the first time, embryonic conch features related to the palaeoecology of these organisms. The nauta of this species had a diameter of approximately 30 mm with 5–6 septa. In addition, we describe a new species, Eutrephoceras antarcticum, and one specimen assigned to the same genus in open nomenclature, both recovered from the Lower Campanian beds of James Ross Island.
publishDate 2005
dc.date.none.fl_str_mv 2005-06
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/11336/96152
Cichowolski, Marcela; Ambrosio, Alfredo; Concheyro, Graciela; Nautilids from the upper cretaceous of the James Ross Basin, Antarctic Peninsula; Cambridge University Press; Antarctic Science; 17; 2; 6-2005; 267-280
0954-1020
CONICET Digital
CONICET
url http://hdl.handle.net/11336/96152
identifier_str_mv Cichowolski, Marcela; Ambrosio, Alfredo; Concheyro, Graciela; Nautilids from the upper cretaceous of the James Ross Basin, Antarctic Peninsula; Cambridge University Press; Antarctic Science; 17; 2; 6-2005; 267-280
0954-1020
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.cambridge.org/core/journals/antarctic-science/article/nautilids-from-the-upper-cretaceous-of-the-james-ross-basin-antarctic-peninsula/6D3FF74B421AB373EE0794FFC90D64DF
info:eu-repo/semantics/altIdentifier/doi/10.1017/S0954102005002671
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
dc.publisher.none.fl_str_mv Cambridge University Press
publisher.none.fl_str_mv Cambridge University 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
_version_ 1842980847046623232
score 12.993085

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