Matskási István (szerk.): A Magyar Természettudományi Múzeum évkönyve 88. (Budapest 1996)

Dulai, A.: Taxonomic composition and palaeoecological features of the Early Badenian (Middle Miocene) bivalve fauna of Szob (Börzsöny Mts, Hungary)

Fig. 1. Sketch map showing the location of the studied sand pit Several Austrian and Hungarian geologists dealt with molluscs. For example 73 gastropod and 20 bivalve species were mentioned from here in HÖRNES's famous works (1856, 1870). STÄCHE (1866) listed 214 mollusc species, then HOERNES & AuiNGER (1879) described 2 new forms from Szob. Among Hungarian geologists KRENNER (1865) listed 29 gastropod and 5 bivalve species, while HALAVÁTS (1881) mentioned 14 Conns species from the locality. Some rare species and 30 species of pleurotomes were described by CSERREGHY-MEZNERICS (1952, 1953). After these smaller papers the mollusc fauna was examined monographically by CSEPREGHY-MEZNERICS (1956). A total of 267 gastropod and 74 bivalve species were listed in her work and 143 of them were described briefly. However, this monograph dealt only with taxonomic questions and the age of the fauna. MATERIAL In the framework of the research project on the Middle Miocene mollusc fauna of the Börzsöny Mts, a palaeoecological work was made on the described material, which