Kaszab Zoltán (szerk.): A Magyar Természettudományi Múzeum évkönyve 77. (Budapest 1985)

Hably, L.: New data to the Eocene flora of Hungary

ANNALES HISTORICO-NATURALES MUSEI NATION ALI S HUNGARICI Tomus 77. Budapest, 1985 p. 25-33. New data to the Eocene flora of Hungary by L. HABLY, Budapest Abstract—The flora of Tatabánya-Márgabánya was recovered from marl, sandymarl dating from Upper Lutecian. Castanopsis elisabethae, Zizyphus zizyphoides, Paliurus cf. tiliaefolius, Ocotea obtusifolia, Sabal major are first published from the Eocene of Hungary. With 3 maps and 2 photoplates. The Eocene macroflora of Hungary has not been fully discovered. Only one rich locality was published by Kovács from Lábatlan (KOVÁCS 1961). Some plant-remains were reported from other localities. The present locality was found in Tatabánya (West Hungary). Some plant fossils are already known from this site, RÁSKY (1956) published Apocynophyllum plumieroides STAUB and ANDREÁNSZKY (1951) discribed Mimosocarpum ANDR. typ. n. This remain was found in operculine-rich clay. In the coal underlayer KOVÁCS (1957) found Dracontomelon minimum REID & CHANDLER, from the foraminifera, mollusc-rich clay-marl PÁLFALVY published 1964 Stenochlaena transdanubica PÁLF. sp. n. From the latter stone PÁLFALVY (1981) described Engelhardia orsbergensis (WESS. & WEB.) JAHN, and E. macroptera (BRONG.) UNG. The locality Tatabánya-Márgabánya is not identical with the precending floras. This locality has not so far been published. The age of the flora is Eocene. The Kecskeméti nummulite-test indicates Upper Lutecien since it contains Nummulites subplanulatus HANTK. & MAD. and N. variolarius (LAMN.), i.e. the first original marine sediment of the transgression. The plant remains were found in several layers of the marl. Most of the remains are leaf impressions, in some cases the cuticule was also preserved. JUGLANDACEAE Engelhardia orsbergensis (WESS. & WEB.) JAHN. (MAP 1) 1852 Xanthoxylon orsbergensis WEBER, p. 224, PI. 25, Fig. 6. 1898 Engelhardia détecta ENGELHARDT, p. 110, Pl. 11, Fig. 7. 1914 Myrica banksiaefolia JABLONSZKY, p. 263-264, PI. 10, figs 4-5. 1957 Schinus oligocaenicum ANDREÁNSZKY & NOVAK, p. 49, PI. 2, Figs. 6, 7: PI. 3, Fig. 9. 1959 Anacardites cfr. Schinus molle L. ; ANDREÁNSZKY, p. 151, PI. 45, Fig. 5, Abb. 174. 1959 Myrica lignit urn RÁSKY, p. 454. 1963b Schinus oligocaenicum ANDREÁNSZKY, p. 100, PI. 2, Fig. 13. Two specimens have been found in the locality, both with counter-proof. One is only a partial remain, but the teeth and the venation are still well observable. Lamina width 1.6 cm. Distance between the teeth fairly large, about 2-3 mm. Teeth small, characteristically deviating from the lamina. Midrib and secondary veins fine, frequently anastomizing ending in the teeth. The length of the other specimen is 4.5 cm, width 0.8 cm. Lamina laneolata, apex, basis acute, basis slightly asymmetrical. Teeth appear only on the upper part of the leaf. Secondary veins fine, ending in the teeth.