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      Palinología del Pérmico Inferior en la perforación DCLS-24 (Formación San Gregorio), departamento de Cerro Largo, Uruguay. Parte I: esporas, algas, prasinofitas y acritarcas Translated title: Palinology of Lower Permian at the DCLS-24 well (San Gregorio Formation), Cerro Largo Department, Uruguay. Part 1: spores, algae, prasynophyceae, and acritarchs

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          Abstract

          El presente trabajo consiste en el análisis palinológico de cuatro muestras provenientes de la perforación DCLS24, realizada por DINAMIGE cuya litología corresponde a pelitas negras laminadas formadas en un ambiente glaciomarino, asignables a la Formación San Gregorio, de edad pérmica temprana. Las asociaciones encontradas están compuestas por esporas, granos de polen, algas, acritarcas y algunos elementos de afinidad incierta. En esta contribución se realiza la descripción sistemática de 38 especies de esporas, seis de algas, un acritarca y dos de afinidad incierta. Se describen por primera vez para el Pérmico de Uruguay Leiotriletes corius Kar y Bose, Brevitriletes leptoacaina Jones y Truswell, B . parmatus (Balme y Hennelly) Backhouse, Grossusporites microgranulatus (Menéndez y Azcuy) Pérez Loinaze y Césari, Lundbladispora areolata Césari, Archangelsky y Seoane, Cristatisporites menendezii (Menéndez y Azcuy) Playford, C . chacoparanaensis Ottone, Pilasporites sp. B Stephenson y Osterloff y Brazilea plurigenus (Balme y Hennelly) Foster.

          Translated abstract

          The palynological contents of four samples of the borehole DCLS24 (made by DINAMIGE) are analysed. Their lithology consists of black laminated clay formed in a glacio-marine environment, assigned to the upper part of the San Gregorio Formation (Early Permian). The assemblages found are composed by spores, pollen grains, algae, acritarchs and some elements of uncertain affinities. In this contribution, 38 species of spores, six species of algae, one acritarch and two of uncertain affinities are described. The following species are mentioned for the first time for the Permian of Uruguay: Leiotriletes corius Kar and Bose, Brevitriletes leptoacaina Jones and Truswell, B. parmatus (Balme and Hennelly) Backhouse, Grossusporites microgranulatus (Menéndez and Azcuy) Pérez Loinaze and Césari, Lundbladispora areolata Césari, Archangelsky and Seoane, Cristatisporites menendezii (Menéndez and Azcuy) Playford, C. chacoparanaensis Ottone, Pilasporites sp. B Stephenson and Osterloff, and Brazilea plurigenus (Balme and Hennelly) Foster.

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          Most cited references79

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          Fossil in situ spores and pollen grains: an annotated catalogue

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            A DISCUSSION AND PROPOSALS CONCERNING FOSSIL DINOFLAGELLATES, HYSTRICHOSPHERES, AND ACRITARCHS, I.

            W R Evitt (1963)
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              Permian palynostratigraphy of the Collie Basin, Western Australia

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                Author and article information

                Journal
                ameg
                Ameghiniana
                Ameghiniana
                Asociación Paleontológica Argentina (Buenos Aires, , Argentina )
                0002-7014
                1851-8044
                March 2006
                : 43
                : 1
                : 227-244
                Affiliations
                [01] Montevideo orgnameFacultad de Ciencias orgdiv1Departamento de Paleontología Uruguay
                [02] orgnameMuseo Argentino de Ciencias Naturales B. Rivadavia orgdiv1División Paleobotánica orgdiv2Sección Paleopalinología
                Article
                S0002-70142006000100018 S0002-7014(06)04300100018
                6e85c4e6-3ffa-4123-b192-ce60dae3f357

                This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.

                History
                : 21 January 2005
                : 14 July 2005
                Page count
                Figures: 0, Tables: 0, Equations: 0, References: 89, Pages: 18
                Product

                SciELO Argentina


                Sistematic,Lower Permian,San Gregorio Formation,Uruguay,Palinología,Sistemática,Pérmico Inferior,Formación San Gregorio,Palynology

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