From the Tertiary As Pontes basin (Galicia, Spain) the first reptilian remains (Crocodylia, Diplocy nodon s.\.) are described. Together with these findings palaeobotanical data (pollen, fructífications)result from the same sediment sampled. They are used for stratigraphical and palaecological interpretations. Due to these palaeontological informations one might interprete the lower As Pontes lignites as belonging to the Paleogene, most probably Oligocene. Nevertheless complementary data are needed lo confirm this stratigraphic contributíon.