Меловой период

Vašícek, Z., Malek, O., 2017. Pseudothurmanniid ammonites from quarries near Lietavská Lúèka and their stratigraphical significance (Late Hauterivian, Central Western Carpathians, Slovakia) // Geological Quarterly, 61 (3), doi: 10.7306/gq.1364

http://dx.doi.org/10.7306/gq.1364