Annales Musei historico-naturalis hungarici

Author(s): Dulai, A.
Title: Early Jurassic brachiopods from the basal layers of the Pisznice Limestone of Lábatlan (Gerecse Mts, Hungary)
Year: 1998
Publication date: 1998-12-31
Volume: 90
Pages: 35-55.

Abstract: This is the first detailed (taxonomical, taphonomical, paleoecological, stratigraphical) study of the Early Jurassic brachiopods of the eastern Gerecse Mts. A rich, Mediterranean-type Early Liassic (probably Late Hettangian-Early Sinemurian) brachiopod fauna was collected bed-by-bed from the Tölgyhát quarry and a section at Póckő. The lowest 3.5 m of the Pisznice Limestone yielded 17 species of rhynchonellids, spiriferids and terebratulids. Four additional brachiopod species were found in the collection of the Hungarian Geological Institution from Póckő. The geological setting of these localities (significant distance from seamounts, basin-type sedimentation) and the low ratio of disarticulated valves suggest that the brachiopods were not transported from a seamount. Therefore the brachiopod fauna of these layers represents the composition of an Early Jurassic moderate to deep-water community. On the basis of the stratigraphic distribution of the brachiopod species, the examined layers at Tölgyhát and Póckő, can probably be correlated with the lower, thick-bedded part of the Jurassic section of Vöröshíd quarry near Tardos. With 17 figures.
Subject: palaeontology

Journal: Annales historico-naturales Musei nationalis hungarici
Journal abbreviation: Annls hist.-nat. Mus. nat. hung.
ISSN: 0521-4726
Publisher: Hungarian Natural History Museum, Budapest
Editor(s): Matskási, I. & Merkl, O.