Alienopteris livingstonensis gen. et sp. nov., enigmatic petrified tree fern stem (Cyatheales) from the Aptian Cerro Negro Formation, Antarctica | ||
| dc.conicet.fuente | individual | |
| dc.conicet.organizacion | Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales "Bernardino Rivadavia" | |
| dc.conicet.paisOrganizacion | Argentina | |
| dc.conicet.produccionid | 6312157 | |
| dc.contributor.author | Vera, Ezequiel Ignacio | |
| dc.date.accessioned | 2020-04-15T20:14:57Z | |
| dc.date.available | 2020-04-15T20:14:57Z | |
| dc.date.issued | 2009-04 | |
| dc.date.updated | 2020-04-08T18:12:01Z | |
| dc.description.abstract | A new genus and species of Mesozoic fern, Alienopteris livingstonensis gen. et sp. nov., is defined, based on permineralized stems recovered from the Aptian Cerro Negro Formation (Antarctica). This new taxon is characterized by the presence of Y-shaped meristeles in the stem, surrounding an heterogeneous pith, and the presence of complex petiole bases, consisting in abaxial and adaxial archs, similar to the ones present in the Cyatheaceae s.l.. Since no living nor fossil filicalean fern possesses such mixture of features, and taking into account that no leaves and reproductive structures were found, phylogenetic relationships are not clear. Two independent cladistic analysis show clear placement of Alienopteris livingstonensis among the ‘‘core tree ferns.’’ | es |
| dc.description.fil | Fil: Vera, Ezequiel Ignacio. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales "Bernardino Rivadavia"; Argentina | |
| dc.format | application/pdf | es |
| dc.identifier.citation | Vera, Ezequiel Ignacio; Alienopteris livingstonensis gen. et sp. nov., enigmatic petrified tree fern stem (Cyatheales) from the Aptian Cerro Negro Formation, Antarctica; Academic Press Ltd - Elsevier Science Ltd; Cretaceous Research; 30; 2; 4-2009; 401-410 | es |
| dc.identifier.institucional | CONICET | |
| dc.identifier.issn | 0195-6671 | es |
| dc.identifier.repo | CONICET Digital | |
| dc.identifier.uri | http://hdl.handle.net/11336/102679 | |
| dc.journal.number | 2 | es |
| dc.journal.pagination | 401-410 | es |
| dc.journal.pais | Estados Unidos | es |
| dc.journal.title | Cretaceous Research | es |
| dc.journal.volume | 30 | es |
| dc.language.iso | eng | es |
| dc.publisher | Academic Press Ltd - Elsevier Science Ltd | es |
| dc.relation.alternativeid | info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1016/j.cretres.2008.08.003 | |
| dc.relation.alternativeid | info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0195667108001134 | |
| dc.rights | info:eu-repo/semantics/openAccess | * |
| dc.rights.uri | https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ | * |
| dc.subject | Antarctica | es |
| dc.subject | Aptian | es |
| dc.subject | Tree ferns | es |
| dc.subject | Cyatheaceae | es |
| dc.subject | Cerro Negro Formation | es |
| dc.subject.classification | Otras Ciencias de la Tierra y relacionadas con el Medio Ambiente | es |
| dc.subject.classification | Ciencias de la Tierra y relacionadas con el Medio Ambiente | es |
| dc.subject.classification | CIENCIAS NATURALES Y EXACTAS | es |
| dc.title | Alienopteris livingstonensis gen. et sp. nov., enigmatic petrified tree fern stem (Cyatheales) from the Aptian Cerro Negro Formation, Antarctica | es |
| dc.type | info:eu-repo/semantics/article | |
| dc.type | info:ar-repo/semantics/artículo | |
| dc.type | info:eu-repo/semantics/publishedVersion | |
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