///An evaluation of the Cretaceous palynostratigraphy of Argentina has been undertaken, by reviewing published data of the geological units with palynomorphs. Formal and informal biozonation schemes were compiled from seven Cretaceous Argentinean basins presented from north to south: the Salta Group Basin, San Luis Basin, Neuquen Basin, Austral Basin, Deseado Massif, San Jorge Gulf Basin, and extra-andean Patagonia. The Early Cretaceous palynological associations are relatively well-known in Argentina; however there is sparse published literature describing and discussing Late Cretaceous miofloras. The association of gymnosperm pollen grains, with conifer affinity Cyclusphaera-Balmeiopsis-Classopollis dominates in all the palynofloras from the Valanginian to the Aptian.Celyphus rallus (filamentous cyanobacteria) appears together with Cyclusphaera but disappears in the Barremian in all the Patagonian basins. Pollen grains belonging to basal angiosperms are important stratigraphic markers in Aptian sediments and younger, and have been used to define palynozones.