Dr. Nagy I. Zoltán szerk.: Fragmenta Mineralogica Et Palaentologica 8. 1977. (Budapest, 1977)
cavities are filled up with sediments interbedded by shaly layers containing visibly some bones of bats. The removing of the remains with acetic acid resulted among thousands of bones of Chiroptera some ones of other microvertebrates. According to the faunal list (p. ) given by JÁNOSSY (1975) and completed by TOPÁL (1975) the age is proved to be between the classical Pannonian and the Uppermost Pliocene, one of the older phases of the "Estramontium". The stratigraphical position is supported not only by the faunistical picture, but also geologically-geomorphologically . Namely the fissure of Loc.l penetrates the cave-sediments of Loc. 9, arguing for a geologically younger age of the former one. Of the most particular interest from systematical point of view seems to be the oldest Mimomysremain in Europe (Mimomys silasensis Jánossy) in the fauna of Loc. 9. Loc. 10. Osztramos This represents a little sporadic locality situated in the uppermost point of the north eastern mining area (at cca. 350 m O. D. ) in the form of a little fissure in its. two meters hight and some decimeters in diameter. The modest fauna (p. ) speaks for a Middle Pliocene age (TO PÁL, 1975). The first appearance of the genus Megaderma in Hungary is worthy of note. Loc. 11., 12. and 13. Osztramos These three localities are also sporadic ones. Loc. 11 lies on the northeastern end of the mining area Nr. XI and seemed faunistically steril through a long time. The discovery of the only determinable remain, a mandible of Mimo mys pitymyoides Jánossy et Meulen proved it to be of Lower Pleistocene, Upper Villányian age. In the south-eastern corner of the mining area Nr. XII. was a large cavity opened by quarrying, filled up by a sediment with seemingly irregularly situated large stones. The lowest deposite represents a strongly packed yellowish earth, very similar that of Loc. 9. This was penetrated later by a fissure with red clay fill. Different places of this latter locality-complex yielded partially mixed material (Loc. 12 and 12a), chiefly belonging to the Lower Pleistocene (Betfian Phase, faunal lists see p. ). One "bone pocket" seems to be on the basis of the exhaustive method (Loc. 12b: only in the Pleistocene nearly absent forestrial elements, Sciurus sp. and Muscardinus sp. present) a Pliocene one. In any case the oldest of them is the mentioned yellowish layer (Loc. 13), in which was found among a lot of bat bones a shrew ( Episoriculus tornensis Jánossy) systematically identical with the same of Loc. 9. Loc. 14. Osztramos In the northern face of the boundary between the mining areas Nr. IX. id XII. in 15 meters distance in western direction from Loc. 1 lies a very • "rrow fissure (about 20-30 cm-s in its diameter but 40 meters in its hight).
