Vörös A. szerk.: Fragmenta Mineralogica Et Palaentologica 15. 1992. (Budapest, 1992)
strobus, Byttneriophyllum, and Ulmus while the other genera or species are represented by 1-2 specimens only. PALAEOECOLOGICAL EVALUATION Unlike the Iharosberény section, in the section of this borehole no different levels can be separated. From a paleoecological point of view, however, the flora can be divided into two groups. One represents a swamp vegetation, the other denotes a riparian vegetation. In the swamp vegetation the same common elements are present as in the Pannonian flora of Iharosberény, i.e. Gfyptostrobus europaeus, Byttnerophyllum tiliaefolium, and Alnus cecropiaefolia. Among the species of the riparian forest Ulmus sp. and Salix sp. are also present in the Iharosberény flora, while Parrotia pristina, Acer cf. subcampestre and Quercus sp. occur only here. Saibc and Ulmus took part in the formation of the lower and higher flood plain vegetation while Parrotia and Quercus were living together in the lower hilly zones (Text-fig. 6). Text-fig. 6- Reconstruction of the Pannonian flora of Tiszapalkonya Ac = Acer cf. subcampestre; Q = Quercus sp.; P = Parrotia pristina; U = Ulmus sp.; Sx = Salix sp.; Al = Alnus cecropiaefolia; Gy = Gfyptostrobus europaeus; By = Byttneriophyllum tiliaefolium PALAEOCLIMATOLOGICAL EVALUATION Swamp vegetation is less suited for drawing climatological conclusions than zonal assemblages because its formation is determined not by climatic but edaphic factors. The swamp plants of the Tiszapalkonya-I borehole are not resistant to cold climate, Byttneriophyllum tiliaefolium is definitely thermophilous. The composition of the swamp flora indicates warm-temperate climate. Members of the zonal assemblages outside the swamp vegetation are apparently more markedly thermophilous. Parrotia persica, the modern equivalent of P. pristina, occurs along the southwest shores of the Caspian Sea, indicating its preference of warm climate. These facts allow us to postulate a climate warmer than the present-day climate of Hungary.
