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)

Gerecse Mts were subdivided into two part by VÍGH (1961): central and eastern Gerecse, and western Gerecse. The boundary between the two areas is running approximately along the road between the villages of Süttő and Tardos. The Jurassic sediments of the western Gerecse were deposited on an emerged seamount, while the eastern Gerecse is characterized by basin-type sediments. The Early Jurassic brachiopods were only studied in the western Gerecse, mainly from the extremely rich Hierlatz-type limestones, and in the Kálvária Hill at Tata. HOFMANN ( 1884) published the first list of fauna and the description of a new species. KOCH (1909) listed 19 Liassic brachiopod species from the Kálvária Hill. KULCSÁR (1914) figured several species from the Gerecse Mts. VÍGH (1943) described 61 brachiopod species from the Sinemurian and Pliensbachian deposits of the western Gerecse. VÍGH in FÜLÖP (1975) listed 41 Early Liassic brachiopod species from the Kálvária Hill. Despite these previous reports, the Early Jurassic brachiopod fauna of the eastern Gerecse is still poorly known. The aim of this paper to present the brachiopod faunas from two classical localities in the eastern Gerecse (Tölgyhát quarry and Póckő), which are very near to each other, south of the town of Lábatlan (Fig. 1 ). The second purpose of Fig. 1. Sketch map showing the location of the studied localities ( 1 - Tölgyhát quarry, 2 - Póckő, 3 - Vöröshíd quarry).