Zs. P. Komáromy szerk.: Studia Botanica Hungarica 13. 1979 (Budapest, 1979)
Hably, Lilla: Climatic changes in the area of Central Paratethys during the Tertiary (based on the macroflora)
tioned by RÁSKY by the name of Araucaria hungarica and Sequoia sternbergii have proved to be Doliostrobus on the basis of examinations of BUZEK, HOLY, KVACEK, on the other hand Doliostrobus remains have been found lately in Tard Clay (HABLY 1979).(The remain described under the name Sequoia sternbergii from the Kiseged flora (near Eger, NOVAK 1950), also belonging to a Tard Clay formation is probably also Doliostrobus .) Consequently the Doliostrobus level should be suitable for levelling longer distances. A wider expansion is shown by Libosedrites salicornioides from the Lower Oligocène in this country; this has been found both in Kiseged and in Obuda, and even occurs everywhere in Tard Clay formations but is not present in the Egerian. (Note: JABLONSZKY (1914) describes Libocedrites fossil from Ipolytarnóc. This is a find of a much later age from Ottnangian. Its mass occurrence however can be dated from the Lower-Middle Oligocène). This is where it shows difference from the Bohemian expansion, where it is present in the Middle Oligocène and continues in the Egerian. Of the Czech Middle Oligocène florae the most significant one is that of Kuclin, there Paleotropical elements dominate mainly with laurophillous flora: Magnolia , Daphnogene , Laurophyllum , Diospyros , Sassafras , Sterculia , Nectandra , Terminalia . A great number of palms is to be found: Sabal major , Chamaerops kutschlinica , rendering a highly tropical character to the flora, indicating a still earlier age. There are a few Arctotertiary elements but their number is not significant. A characteristic feature is the presence of primieval types of Quercus , Q. drymeja and Q. kutsclinica . From the Hungarian Lower Oligocène, from the Tard Clay, from the brickyard of Szépvölgy (Budapest) among others Pinus , Taxodium , Myrica , Salix . Pterocarya , several species of Quercus , Ulmus , Zelkova , Ficus , Persea , Laurus , Cinnamomum are mentioned by RÁSKY (1943). In addition to the above he lists also Sabal from Csillaghegy, Budapest. According to the genuslist the number of Arctotertiary elements is relatively high, but the Salix , Ul mus , Zelkova finds are uncertain as only one specimen of each has been found, and these of rather poor conservation. Although the long narrow Salixtype leaves are rather frequent, their poor conservation makes it impossible to prove that they are Salix ; in some cases where the venation is visible a definite Lauraceae character can be observed. The Kiseged flora (near Eger) also belongs to Tard Clay formation. At any rate the two florae (Kiseged and Budapest) shows great similarity. Apart from Doliostrobus and Libocedrites remains Taxodium , Sequoia , Pinus are to be found in both places. Of the dicotyledonous Magnolia , Cinnamomum , Sterculia , Ficus , Zizyphus are detectable in both florae. A new entry is Platanus neptuni (HABLY 1979) which figures under different names in the description of RÁSKY(1943) and ANDRE ÁNSZKY (1957,1959,1965,1966) as the species shows great variability. It was found in great quantities in Tard Clay formation when the Budapest Metro was being constructed (HABLY 1979),but it can be found in great quantities also in former collections unnamed or listed under a different name.The species was recognised and described by BUZEK, HOLY and KVACEK (1967) from Middle Oligocène of Bohemia (Kuclin). In Hungary as indicated by researchers so far, it can be dated from the Lower Oligocène. In Europe it is known from the Oligocène (KNOBLOCH 1973). Particular attention has been given to this species as it is of great significance both from climatological and from biostratigraphical aspects. Its stratigraphical value has already been mentioned. As to the climate we can draw conclusions from its eucological
