This contribution provides a synthesis of the palynological studies carried outon “Neocomian” units of the Golfo San Jorge Basin. Additionally, a revision of thepalynological zones established for these units in previous works is presented,incorporating insights from new contributions and recent taxonomic novelties.Based on the palynological record, the age of the Las Heras Group is consideredas not younger than Hauterivian at the northern and southern flanks of theGolfo San Jorge Basin. In contrast, the age of this group extends to the Aptianin the western area. Nevertheless, more detailed palynological studies and anevaluation of the current status of the stratigraphic units recognized in theanalyzed wells are needed to confirm and expand these results.

Fil: Perez Loinaze, Valeria Susana. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales "Bernardino Rivadavia"; Argentina