Abstract: In the lower Dacian deposits from Valea Rea point (Prahova county, south of Câmpina) two seismites zones (sensu Seilacher, 1969) have been recognized: segmented and rubble. The first zone is marked by the existence of fragmented thin layers and laminae, as well as by collaps structures or by remains of Skolithos type cylindrical, vertical galleries. The second zone is characterized by thin and discontinuous laminae, possible of algal-mat nature.