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dc.date.accessioned 2020-05-27T16:37:09Z
dc.date.available 2020-05-27T16:37:09Z
dc.date.issued 2018-12-24
dc.identifier.uri http://sedici.unlp.edu.ar/handle/10915/96805
dc.description.abstract A new species of Osmundopsis Harris is described based on several impression-compression fossils from the upper section of the Potrerillos Formation (Uspallata Group) at Cerro Cacheuta Hill, Mendoza Province, Argentina. Osmundopsis zunigai sp. Nov. is characterized by having fertile pinnae with a slender striate rachis, bearing widely separate, opposite to subopposite short falcate pinnules with an entire margin, rounded apex, and a partially reduced lamina. The pinnules bear sporangia loosely disposed in clusters of four or five on the abaxial side. The sporangia are wedge-to heart-shaped, shortly stalked, with cells of the apical region thickened, and have a vertical dehiscence slit. The spores are trilete and laevigate. This is the first record of Osmundopsis in the Triassic of Argentina. The mutual occurrence or co-preservation of Osmundopsis zunigai sp. Nov. with sterile fronds of Cladophlebis kurtzi suggests the possibility that these species formed part of a dimorphic bipinnate frond. The diversity and geographic extent of fertile leaves of the Osmunda lineage in the early Late Triassic, with records in South Africa and Antarctica and now with this new taxon, support the idea of a moist mesothermal climatic belt in southern Gondwana. en
dc.format.extent 107-119 es
dc.language en es
dc.subject Carnian es
dc.subject Mendoza province es
dc.subject Osmundaceae es
dc.subject Osmundopsis es
dc.subject Potrerillos formation es
dc.title New species of osmundaceous fertile leaves from the upper Triassic of Argentina en
dc.type Articulo es
sedici.identifier.uri https://ri.conicet.gov.ar/11336/82509 es
sedici.identifier.uri https://content.sciendo.com/view/journals/acpa/58/2/article-p107.xml es
sedici.identifier.other http://dx.doi.org/10.2478/acpa-2018-0014 es
sedici.identifier.other hdl:11336/82509 es
sedici.identifier.issn 2082-0259 es
sedici.creator.person Coturel, Eliana Paula es
sedici.creator.person Bodnar, Josefina es
sedici.creator.person Morel, Eduardo Manuel es
sedici.creator.person Ganuza, Daniel es
sedici.creator.person Sagasti, Ana Julia es
sedici.creator.person Beltrán, Marisol es
sedici.subject.materias Paleontología es
sedici.subject.materias Ciencias Naturales es
sedici.description.fulltext true es
mods.originInfo.place Facultad de Ciencias Naturales y Museo es
sedici.subtype Articulo es
sedici.rights.license Creative Commons Attribution-NonCommercial-NoDerivs 3.0 Unported (CC BY-NC-ND 3.0)
sedici.rights.uri http://creativecommons.org/licenses/by-nc-nd/3.0/
sedici.description.peerReview peer-review es
sedici.relation.journalTitle Acta Palaeobotánica es
sedici.relation.journalVolumeAndIssue vol. 58, no. 2 es


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