Matskási István (szerk.): A Magyar Természettudományi Múzeum évkönyve 90. (Budapest 1998)

Dulai, A.: Early Jurassic brachiopods from the basal layers of the Pisznice Limestone of Lábatlan (Gerecse Mts, Hungary)

this work is to make a comparison between the fauna of the Lábatlan localities and the fauna of the Vöröshíd quarry at Tardos. The brachiopods were collected from the basal layers of the oldest Jurassic formation (Pisznice Limestone Formation). The knowledge of the brachiopods of these layers is particularly important, since determinable ammonites are missing from these layers. So the brachiopods are the only megatbssils and therefore they are stratigraphically significant. Figs 2-3. Tölgyhát quarry: 2 = the studied section of the Pisznice Limestone, 3 = stratigraphie distribution of the determined species within the studied layers (width of vertical bars: 1 mm = I specimen)