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Resumen de Quistes de dinoflagelados no marinos del Holoceno de la provincia de Buenos Aires, Argentina: relación con especies actuales de Peridinium

Marcela Borel, Andrés Boltovskoy, Raquel Guerstein, Silvina Stutz

  • Non marine dinoflagellate cysts from the Holocene of Buenos Aires province, Argentina:relationship with recent species of Peridinium. Palynological zones with important frequencies ofperidinioid organic walled dinoflagellate cysts were reported for freshwater to brackish, middle to late Holocenesequences from southeast of Buenos Aires province, Argentina. The recovered dinocysts have a thin wall,frequently folded; with granulate periphragm and smooth endophragm. The tabulation and the archeopylesuture are difficult to discern. These non-marine palynomorphs are described and compared with modern cystsrecovered from a bloom of Peridinium willei Huitfeld-Kaas in a pool at Casali Quarry, Los Talas, Buenos Airesprovince, and with recent cysts produced in San Roque reservoir, Córdoba province, by Peridinium gatunenseNygaard. The comparison points out the scarcity of morphological distinctive features characteristic of thetheca stage, though shows general similarities between the present and fossil cysts.


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