New Marsileaceous Fossils from the Late Cretaceous of South America and a Reevaluation of Marsileaceaephyllum.

Herein we report new macrofossils and associated microfossils representing the aquatic fern family Marsileaceae from the Campanian to Maastrichtian Cañadón del Irupé locality, La Colonia Formation, Chubut Province, Argentina. The macrofossils include compound leaves, detached leaflets, and sporocarp...

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Autores: Hermsen, Elizabeth, Gandolfo, Maria A., Cuneo, Nestor Ruben
Formato: artículo
Estado:Versión publicada
Fecha de publicación:2013
País:Argentina
Recursos:Consejo Nacional de Investigaciones Científicas y Técnicas
Repositorio:CONICET Digital (CONICET)
Idioma:inglés
OAI Identifier:oai:ri.conicet.gov.ar:11336/1718
Acesso em linha:http://hdl.handle.net/11336/1718
Access Level:acceso abierto
Palavra-chave:CRETACEOUS
FOSSIL
LA COLONIA FORMATION
MARSILEACEAE
PATAGONIA
https://purl.org/becyt/ford/1.5
https://purl.org/becyt/ford/1
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oai_identifier_str oai:ri.conicet.gov.ar:11336/1718
network_acronym_str AR
network_name_str Argentina
repository_id_str
spelling New Marsileaceous Fossils from the Late Cretaceous of South America and a Reevaluation of Marsileaceaephyllum.Hermsen, ElizabethGandolfo, Maria A.Cuneo, Nestor RubenCRETACEOUSFOSSILLA COLONIA FORMATIONMARSILEACEAEPATAGONIAhttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1Herein we report new macrofossils and associated microfossils representing the aquatic fern family Marsileaceae from the Campanian to Maastrichtian Cañadón del Irupé locality, La Colonia Formation, Chubut Province, Argentina. The macrofossils include compound leaves, detached leaflets, and sporocarps. The venation of the leaflets is consistent with the diagnosis of Marsileaceaephyllum, which we argue is poorly defined. Consequently, the circumscription and diagnosis of Marsileaceaephyllum are emended in order to limit the taxon to include only leaves or rhizomes bearing leaves with four leaflets that most resemble those of Marsilea among extant genera of Marsileaceae. The Cañadón del Irupé leaves and leaflets are assigned to the new genus Mirasolita, erected to encompass compound leaves bearing two petiolulate leaflets, each leaflet having a reniform lamina and reticulate venation. The architecture of Mirasolita leaves and leaflets is distinct from that of leaves of any of the living marsileaceous genera. The stalked sporocarps are assigned to the new genus Lugiomarsiglia. They are attributed to Marsileaceae because each has a sclerenchymatous wall surrounding circular bodies interpreted as sporangia. Associated megaspores are assigned to Molaspora lobata, a geographically widespread, primarily Late Cretaceous dispersed spore taxon. The co-occurrence of Molaspora lobata with an extinct marsileaceous leaf form fits a pattern wherein Cretaceous Regnellidium-like megaspores are associated with or found in situ within marsileaceous macrofossils that display a variety of morphologies.Fil: Hermsen, Elizabeth. Ohio State University; Estados Unidos de América;Fil: Gandolfo, Maria A.. Cornell University; Estados Unidos de América;Fil: Cuneo, Nestor Ruben. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Museo Paleontologico Egidio Feruglio; ArgentinaSpringer Wien2013-08info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/1718Hermsen, Elizabeth; Gandolfo, Maria A.; Cuneo, Nestor Ruben; New Marsileaceous Fossils from the Late Cretaceous of South America and a Reevaluation of Marsileaceaephyllum.; Springer Wien; Plant Systematics and Evolution; 300; 2; 8-2013; 369-3860378-2697enginfo:eu-repo/semantics/altIdentifier/doi/10.1007/s00606-013-0886-7info:eu-repo/semantics/altIdentifier/url/https://link.springer.com/article/10.1007%2Fs00606-013-0886-7info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2024-05-08T14:17:10Zoai:ri.conicet.gov.ar:11336/1718instacron: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:34982024-05-08 14:17:10.751CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv New Marsileaceous Fossils from the Late Cretaceous of South America and a Reevaluation of Marsileaceaephyllum.
title New Marsileaceous Fossils from the Late Cretaceous of South America and a Reevaluation of Marsileaceaephyllum.
spellingShingle New Marsileaceous Fossils from the Late Cretaceous of South America and a Reevaluation of Marsileaceaephyllum.
Hermsen, Elizabeth
CRETACEOUS
FOSSIL
LA COLONIA FORMATION
MARSILEACEAE
PATAGONIA
https://purl.org/becyt/ford/1.5
https://purl.org/becyt/ford/1
title_short New Marsileaceous Fossils from the Late Cretaceous of South America and a Reevaluation of Marsileaceaephyllum.
title_full New Marsileaceous Fossils from the Late Cretaceous of South America and a Reevaluation of Marsileaceaephyllum.
title_fullStr New Marsileaceous Fossils from the Late Cretaceous of South America and a Reevaluation of Marsileaceaephyllum.
title_full_unstemmed New Marsileaceous Fossils from the Late Cretaceous of South America and a Reevaluation of Marsileaceaephyllum.
title_sort New Marsileaceous Fossils from the Late Cretaceous of South America and a Reevaluation of Marsileaceaephyllum.
dc.creator.none.fl_str_mv Hermsen, Elizabeth
Gandolfo, Maria A.
Cuneo, Nestor Ruben
author Hermsen, Elizabeth
author_facet Hermsen, Elizabeth
Gandolfo, Maria A.
Cuneo, Nestor Ruben
author_role author
author2 Gandolfo, Maria A.
Cuneo, Nestor Ruben
author2_role author
author
dc.subject.none.fl_str_mv CRETACEOUS
FOSSIL
LA COLONIA FORMATION
MARSILEACEAE
PATAGONIA
https://purl.org/becyt/ford/1.5
https://purl.org/becyt/ford/1
topic CRETACEOUS
FOSSIL
LA COLONIA FORMATION
MARSILEACEAE
PATAGONIA
https://purl.org/becyt/ford/1.5
https://purl.org/becyt/ford/1
description Herein we report new macrofossils and associated microfossils representing the aquatic fern family Marsileaceae from the Campanian to Maastrichtian Cañadón del Irupé locality, La Colonia Formation, Chubut Province, Argentina. The macrofossils include compound leaves, detached leaflets, and sporocarps. The venation of the leaflets is consistent with the diagnosis of Marsileaceaephyllum, which we argue is poorly defined. Consequently, the circumscription and diagnosis of Marsileaceaephyllum are emended in order to limit the taxon to include only leaves or rhizomes bearing leaves with four leaflets that most resemble those of Marsilea among extant genera of Marsileaceae. The Cañadón del Irupé leaves and leaflets are assigned to the new genus Mirasolita, erected to encompass compound leaves bearing two petiolulate leaflets, each leaflet having a reniform lamina and reticulate venation. The architecture of Mirasolita leaves and leaflets is distinct from that of leaves of any of the living marsileaceous genera. The stalked sporocarps are assigned to the new genus Lugiomarsiglia. They are attributed to Marsileaceae because each has a sclerenchymatous wall surrounding circular bodies interpreted as sporangia. Associated megaspores are assigned to Molaspora lobata, a geographically widespread, primarily Late Cretaceous dispersed spore taxon. The co-occurrence of Molaspora lobata with an extinct marsileaceous leaf form fits a pattern wherein Cretaceous Regnellidium-like megaspores are associated with or found in situ within marsileaceous macrofossils that display a variety of morphologies.
publishDate 2013
dc.date.none.fl_str_mv 2013-08
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/11336/1718
Hermsen, Elizabeth; Gandolfo, Maria A.; Cuneo, Nestor Ruben; New Marsileaceous Fossils from the Late Cretaceous of South America and a Reevaluation of Marsileaceaephyllum.; Springer Wien; Plant Systematics and Evolution; 300; 2; 8-2013; 369-386
0378-2697
url http://hdl.handle.net/11336/1718
identifier_str_mv Hermsen, Elizabeth; Gandolfo, Maria A.; Cuneo, Nestor Ruben; New Marsileaceous Fossils from the Late Cretaceous of South America and a Reevaluation of Marsileaceaephyllum.; Springer Wien; Plant Systematics and Evolution; 300; 2; 8-2013; 369-386
0378-2697
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1007/s00606-013-0886-7
info:eu-repo/semantics/altIdentifier/url/https://link.springer.com/article/10.1007%2Fs00606-013-0886-7
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 Springer Wien
publisher.none.fl_str_mv Springer Wien
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
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 15.812455

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