Nógrád Megyei Múzeumok Évkönyve XVIII. (1993)

Tanulmányok - Természettudomány - János Hír: Presence of Chalicotherium grande (Blainville, 1849) (Mammalia, Preissodactyla) in the Paris Valley at Nógrádszakál (North Hungary, Nógrád County)

Chalicotherium goldfussi mainly after the small sized premolar. The Chalicotherium baltavárensis is probable a synonim of the Chalicotherium goldfussi. The praemolar from Csákvár is presumably a représentative of a distinct subspecies of Chalicotherium grande. 4. The geological context of the find from Nógrádszakál The molar was collected from middle-sized grave layer. In the Paris Valley and at the close surroundings of it a mainly coarse grained clastic and tuffitic séries is outcropped. It is built up by gravel, sand and tuffititic layers. The well rounded pebbles are mainly from pyroxene andésite (90%) and there are only a few from quartzit and granité. Tuba L. (1985) explained the origination of the sédiment by the outworking of the primere volcanic material with clast-streams. The volcanic centers there were in the Osztrovszky Mountains in Slovakia. In the Slovakian lithostratigraphical System the clastic séquence is classified as the part of the Vinica-Pribelce Formation (Vass D. et al 1979). In the Hungárián literature the séquence of the Paris Valley is regarded as the coastal faciès of the Rákos Leithakalk Formation (Balogh К. 1966, Jámbor Á. 1981, Hámor G. 1985). The Valley is a well-known paleobotanical locality. The Upper Badenian paleoflóra contains 51 taxa (Andreánszky G. 1959, Kordos-Szakály M. 1984), and refers to an accumulation by water and also to riparian circumstances of a delta character. The first vertebrate fossil (Lamna sp.) from the Paris Valley was reported by Gaál I. (1905). Up to the immédiate past 2 large mámmal finds were described from here: Zygolophodon tapiroides molar and Rhinocéros sp. mandible (Schlesinger G. 1922, Kordos L. 1985). After coming to light of the Chalicotherium molar raised the question: besides the single large mammals is there any possibility of the systematic collection of small vertebrates? For clearing up this problem I collected 10 samples (mass: 15 kg one by one) from the sandy and tuffitic clay layers of the Valley (Fig. 13.). After washing in sieves (0.8 mm ) and sorting the samples produced the next finds. 1/2: Pisces indet. (Selachidea, Batididea) Vertebrata indet. 1/3: Pisces indet. (Selachidea, Batididea) Anura indet., Ophidia indet 2/4: Pisces indet. (Selachidea) 3/2: Piscesindet. (Selachidea) The fish finds are shark and ray teeth. The most promishing sample is the no. 1/3 because the présence of land vertebrates (frog and snake). From mis point the collection of land mammals is possible in the future with washing about a ton of sédiment. LITERATURE: ANDREÁNSZKY G. (1959): Die Flora der sarmatischen Stufe in Ungarn.- Akadémiai Kiadó, p. 1-360., Bp. BALOGH К (1966): Magyarázó Magyarország 200000-es földtani térképsorozatához, М-34-ХХХП. Salgótarján.- Magyar Állami Földtani Intézet, p. 1-155., Bp. BRULIN DE H, DAAMS R., FAHLBUSCH V., GINSBURG L., DAXNER-HÖCK G, METN P., MORALES J. (1990): Report of the RCMNS working group on fossil mammals (five appendices).- manuscript, p. 1-18., Reisenburg. DANK V., JÁMBORA. (1987): Allgemeine geologische Merkmale der Ablagerungen des Pannonién s. str. (Kunság-Stufe) in Ungarn.- Annais of the Hungárián Geological Institute, 69., p.1925., Bp. FREUDENTHAL M., Kordos L. (1989): Cricetus polgardiensis sp. nov. and Cricetus kormosi Schaub, 1930 from the Late Miocène Polgárdi localities (Hungary).- Scripta Geol., 89., p.71100., Leiden. GAÁL I. (1905): Adatok az Osztrovski-Vepor andesit- tufáinak mediterrán faunájához.- Földtani Közlöny, 35., 6-7., p.288-313., Bp. 235