Matskási István (szerk.): A Magyar Természettudományi Múzeum évkönyve 83. (Budapest 1991)

Kvaček, Z. ; Hably, L.: Notes on the Egerian stratotype flora at Eger (Wind Brickyard), Hungary, Upper Oligocene

from the Jiu Valley as A. hungaricum ANDREÁNSZKY by GIVULESCU (1973). In all sites this form is associated with other forms of A. tricuspidatum. More than 10 specimens maple samaras have been recovered in in EWU in the association of the above leaves. They are all of the same kind and exactly correspond with the fruits ascribed to Acer tricuspidatum (e. g. BŐZEK1971). AQUIFOLIACEAE Ilex ? andreanszkyi sp. n. (Plate XI: 1-3) Diagnosis: Leaves broadly lanceolate, oblanceolate to broadly ovate, 6.5-8 cm long and 3-3.5 cm wide, acuminate, narrowly to widely cuneate at the base, very shortly petiolate. Petiolate 1 mm long or not preserved, margin simply coarsly and widely dentate in the upper part of the leaves, indistinctly dentate towards the leaf base, thickened, teeth sharply pointed, sinuses rounded. Venation pinnate, semicraspedodromous, midrib straight, secondaries thin, indistinctly imprinted, diverging mostly at an angle of 60°, intersecondary veins one or two, parallel with the secondaries forming with the tertiary veins irregular meshes, partly parallel with the secondaries, loops of secondaries well inside the leaf lamina connected with smaller loops towards the margin, which give off side veins into the teeth. Higher order venation not preserved. H o 1 o t y p e : MM W 1142 (pl. XI, f. 2, 3) - EWU. - P a r a t y p e s : MM 1144, W 1183a, W 1040 (Plate XI: 1)-EWU. Only few leaves of this remarkable species have been recovered in MM, BP and MAFI, and among the unidentified material from EWU. Similar leaf fossils have been described from Tertiary strata as various species of Hex. Ilex celastrina SAPORTA (1865) from the Oligocène of southern France differs in its steeper and denser secondaries, /. cassineformis KOLAKOVSKD (1964) and /. microcassine KOLAKOVSKLI (1964) from the Pliocene of Abhasia show looping of secondaries only very near the margin. The same venation pattern and cuticular structure characterise /. pseudocanariensis GIVULESCU (1982) from the late Miocene of Romania. Having no anatomical evidence the generic assignment of the above-described material is only tentative. They can be well compared with the extant North American Ilex cassine L. or Ilex caroliniana MILL. OLEACEAE Fraxinus sp. (Plate X: 7) Some incomplete sessile, oblong, finely serrate, about 2 cm wide and more than 6 cm long leaflets show venation patterns characteristic of Fraxinus: semicraspedodronous secondaries leave the midrib in large arches and give off side veins that enter the sinuses of the teeth. Such rare specimens (MM 66.370.1, 62.230.1, BP 70.54.1) from EWU were found unidentified or designated as Pterocarya denticulata WEB. They resemble the foliage previously referred to as Juglans bilinica UNG. (sub Juglans juglandiformis sensu BŰZEK 1971) or Fraxinus ungeri (GAUDIN) KNOBLOCH et KVACEK. RHAMNACEAE Ziziphus cf. ziziphoides (UNGER, 1850) WEYLAND, 1943 (Plate XI: 4) Asymmetrical oval acuminate leaves with acrodromous basal veins and very finely toothed margin were compared by ANDREÁNSZKY (1966, textf. 93) with a common Oligocène element, Z. ziziphoides. This leaf form occurs quite rarely both in EWL (MM 64.269.1, 66.252.1) and in EWM (MM 64.267.2, 64.266.1), smaller specimens come from EWU (BP 60.745.1, 71.420.1). All of them exceed by larger size (up to 9 cm long) the type specimens from Socka, as already stressed by ANDREÁNSZKY (1966: 99). Annls hist. -nat. Mus. natn. hung, 83,1991