Kaszab Zoltán (szerk.): A Magyar Természettudományi Múzeum évkönyve 76. (Budapest 1984)

Kordos-Szakály, M.: New data to the Miocene flora of Nógrádszakál (Hungary)

Table 2. Common species and number of specimens from localities with plant impressions at Paris stream and Bertece valley impressions (pieces) Common taxa Paris Bertece Equisetum parlatorii (HEER) SCHIMPER 24 37 Cercidiphyllum crenatum (UNG.) BROWN 1 1 Parrotia pristina (ETT.) STUR 2 177 Weinmannia sp. 1 1 "Acer" palaeotataricum É. KOVÁCS 275 20 Hedera cfr. helix L. 6 3 Cornus praeamomum É. KOVÁCS 77 6 Cornus sp. 3 1 Ulmus plurinervia UNG. 7 1 Ulmus sp. 167 12 Quercus pontica miocenica KUBÁT 1 6 Quercus sp. 15 2 Carya sp. 4 1 Populus populina (BRONG.) KNOBL. 5 14 Populus balsamoides GOEPP. 82 7 Populus sp. 150 4 total : 820 293 Table 3. Absolute and percentile distribution of the most frequent genera in the floras of the Paris stream and the Bertece valley Dominant taxa Paris Bertece Dominant taxa pieces % pieces % Equisetum 24 2.00 37 11.00 Parrotia 2 0.20 181 54.00 Acer 279 23.80 20 5.90 j Cornus 80 6.80 7 2.10 Ulmus 217 18.50 15 4.50 1 Quercus 18 1.50 15 4.50 j Pterocarya 22 1.80 2 0.60 Salix 133 11.30 — — Populus 313 26.70 25 7.50 total : 1088 92.60 302 90.10 From the valley of the Paris stream specimens of four species of the genus Vit is came to light. Among them only one species was identifiable beyond doubt. Vitis olrikiiHtER (Plate II : 4) is represented by two specimens, a very beautiful one and a small, fragmentary one. The intact impression is 6.2 cm long and 5 cm wide. Its base is deeply rounded, cordiform, from the medial part toward the apex becoming strongly narrow. The margins are not lobated, though the teeth corresponding to the main veins are more conspicuous. On the basis of the characteristic live main veins the species can be identified with certainty. The family of evergreen creepers to which Hedera cfr. helix L. belongs (Plate III : 4) has been known since the Lower Cretaceous times. In the Tertiary it was widespread in Europe. Its fragmentary crumpled leaves can be found at both localities. Cornus praemomum É. KOVÁCS (Plate III: 1) described from the valley of the Paris stream, also came to light from the Bertece valley though with less frequency. Its dimensions are extremely variable length is between 5 and 23 cm. width between 1.5 and 8 cm. its shape is oval-lanceolate, its apex is long-acuminated, the margins are intact and the nervure is camptodromomous. Cornaceae are frequent in Tertiary floras. It is a characteristic of their leaves that the secondary veins are strongly