Vörös A. szerk.: Fragmenta Mineralogica Et Palaentologica 14. 1989. (Budapest, 1989)

Parakellnerites cf. boeckhi (Roth, 1871) Parakellnerites cf. hungaricus (Mojsisovics, 1880) Parakellnerites sp., äff. felsoeoersensis (Stürzenbaum, 1875) Parakellnerites sp. Parakellnerites ? sp. Stoppaniceras cf. variabilis Rieber, 19 73 (Plate 1:1, 2) Stoppaniceras ? sp. Nevadites ? cf. hantkeni (Mojsisovics, 18821 (Plate 111:2) Nevadites ? cf. ecarinatus (Hauer, 1896) (Plate III: 1) Xenoprotrachyceras reitzi (Böckh, 1872) (Plate 111:5) Xenoprotrachyceras cholnokyi (Frech, 1903) (Plate 111:3,4) Ptychites sp. Flexoptychites flexuosus (Mojsisovics, 1882) Flexoptychites acutus (Mojsisovics, 1882) Flexoptychites cf. angustoumbilicatus (Böckh, 1872) Flexoptychites cf. gibbus (Benecke, 1856) Flexoptychites sp. "Atractites" sp. Discohelix? sp. Norella refractifrons (Bittner, 1890) (Plate IV: 2) Norella sp.

, aff rosaliae (Salomon, 1895) (Plate IV: 1) Volirhynchia vivida (Bittner, 1890) Volirhynchia productifrons (Bittner, 1898) Trigonirhynchella ? sp., aff. délecta (Bittner, 1982) Decurtella sp. Mentzelia mentzeli (Dunker, 1851) Mentzelia mentzeli baconica (Bittner, 1890) (Plate IV: 3) Mentzelia sp., aff. ampla (Bittner, 1890) (Plate IV: 7) Mentzelia sp. indet. Koeveskallina ? pannonica (Bittner, 1890) (Plate IV: 4) Koeveskallina sp. indet. Pexidella cf. sturi (Böckh, 1872) Schwagerispira speciosa (Bittner, 1890) (Plate IV: 6) Coenothyris ? sp., aff. vulgaris (Schlotheim, 1820) Angustothyris ? sp., aff. suspecta (Bittner, 1902) (Plate IV: 5) BIOSTRATIGRAPHIC EVALUATION Taking the number of specimens and species, as well as the stratigraphie value of the macrofossil groups known from the Vászoly section into account, the ammonoids and - secondarily - the brachiopods could be used for biostratigraphic studies. Ammonoid biostratigraphy The distribution of ammonoids is scattered within the Vászoly section. Richly fossiliferous and barren beds alternate, seemingly not related to the lithologie alternation of carbonate and tuffaceous layers. In general, the section contains a satisfactory quantity of ammonites to found its biostratigraphic succession. The biostratigraphic study of the Vászoly section was intended to draw the Anisian/Ladinian boundary. First our own view should be demonstrated on the widely disputed Upper Anisian - Lower Ladinian biostratigraphic units. KRYSTYN (1983) introduced the "Parakellnerites Zone" for the uppermost Anisian and the "Nevadites Zone" for the lowermost Ladinian. Unfortunately, this was accepted on the workshop meeting of the IGCP-4 project, and the IUGS Subcommission on Triassic Stratigraphy (see ZAPFE 1983). Nevertheless, from nomenclatoriai point of view, we cannot