Multivariate analysis of Lower Cretaceous monosulcate pollen from central-western Argentina

Monosulcate pollen grains are an important component of the Mesozoic palynofloras around world. These type produced by several groups plants and because morphological similarities among them, their taxonomic determination is difficult. Currently, there scarce information about differences monosulcate this makes botanical affinity in fossil specimens challenging. In work, we analyzed statistically features recovered from six palynological assemblages Lower Cretaceous Lagarcito Formation central-western Argentina. We used our own dataset data description published cycadalean situ male cones Patagonia. Furthermore, variables selected living species were added to support analysis. According results, two main with clear characterized fossils. The use extant allowed us exine sculpture as variable when characterizing grains. Finally, showed in-situ cone Androstrobus munku patagonicus. This work first attempt identify different types Our results will contribute elucidate variations may improve future studies.