O. G. Dely szerk.: Vertebrata Hungarica 18. (Budapest, 1978)
Kordos, L.: Historico-zoogeographical and ecological investigation of the subfossil vertebrate fauna of the Aggtelek Karst 85-100. o.
Ocsisnya-tető Plateau Ocsisnya-tető Plateau is situated at the end of the Hosszú Valley (Fig.l) branching off northwards from Tohonya Valley ending 2 km north of Jósvafő. During the summer of 1972 the members of the speleological team of VITUKI 1 ) started to re-open a favourable sinking at Ocsisnya-tető Plateau and this hole was temporarily named as the "'Ciprus Cave". Faunal remains were found in the test hole, at a 5. 4 m depth from an approximately 5 cm thick yellow clay and rubble filling lying between limestone slabs having a slope of 10-15 degrees (Table 1). This fauna which has a mixed character contains only a few specimens. Partly species like Microtus cf. nivalis and Ochotona , indicating a cool climate, and partly recently immigrated thermophilous forms (e.g. C rocidura) characteristic of the Holocene. As for age determination we meet the same problems as in the case of the Tücsök-lyuk Shaft. Because of the smaller quantity of psychrophilous and hygrophilous species as well as of the higher proportion of species characteristic of the Holocene its fauna is younger than that of Tücsök-lyuk Shaft, although, considering the presence of the snow vole (Microtus nivalis) it is unlikely to be younger than the Boreal Phase. Thus its presumable age is the first half of the Boreal Phase. Vass Imre Cave The approximately 1 km long Vass Imre Cave lying 1. 5 kms north of Jósvafő at the end of Tohonya Valley (Fig. 1) was explored in 1954. In 1972 a new front adit was opened to the cave. During this work the miners at first got into the so-called Omladék-Hall along a fissure having a N - S strike. This fissure was filled up with brown clay containing fossils. The age of the fauna found in this fissure can be determined with the aid of Ochotona pusillus together with other species living in the surroundings even today. According to the faunal spectra of the Jankovich Cave (KRETZOI, 1957) and the Petényi Cave (JÁNOSSY, 1956, 1960), Ochotona , which was frequent in the Upper Pleistocene, disappeared from Hungary at the beginning of the Neolithic. On the other hand, it seems to be still frequent in the Bükk culture layer oftheBaradla Cave, thus, by all means it could survive climatic optimum. As Ochotona is still frequent in the fauna, its age can be set to Boreal-Atlantic Transitional Phase when a major afforestation started in the Carpathian Basin (ZÓLYOMI, 1958; SOÓ, 1965, 1969). These phase can be characterized by the larger proportion of species requiring open areas as well as by the appearence of the bank vole ( Myodes) . 1) Vízgazdálkodási Tudományos Kutató Intézet, Budapest.
