Vörös A. szerk.: Fragmenta Mineralogica Et Palaentologica 14. 1989. (Budapest, 1989)
Table 1. (cont.) S/A 3 4 5 6 8 9 12 14 15 16/A Mentzelia sp., aff. ampla Koeveskallina ? 4 3 4 pannonica Pexidella cf. sturi Schwagerispira 39 4 35 1 speciosa Coenothyris ? sp. , aff. vulgaris Angustothyris ? sp. , aff. suspecta 3 6 3 1 3 2 12 4 n Part C (Beds 9-12) is characterized by the occurrence of diverse Hungarites species (H. boeckhi, H. mojsisovicsi , H. bocsarensis) . In Bed 12 Parakellnerites boeckhi joins the assemblage. Part D begins with Bed 14, where Nevadites ? hantkeni and N. ecarinatus along with Xenoprotrachyceras reitzi and X. cholnokyi appear simultaneously. Although species of Hun garites known from the deeper part of the section are still present, this part must be assigned to the Reitzi Zone by the occurrence of the index species and other forms belonging to the " reitzi group", which characterize this zone. Thus the Anisian/Ladinian boundary can be drawn at the base of Bed 14. This "orthostratigraphic" boundary coincides almost perfectly with that established by conodont biostratigraphy (i.e. at the base of Bed 17: KOVÁCS et al. in press). Brachiopod biostratigraphy In the Vászoly section brachiopods represent the second richest fossil group after ammonoids. They are abundant in the lower, predominantly carbonatic part of the sequence (Beds 3/A, 4, 5, 6). The composition of the fauna differs markedly from that of the Pelsonian brachiopod assemblages from other localities of the Balaton Highland (Köveskál, Aszófő and Felsőörs respectively), which were subject of the authors' previous study. The number of common species is only 3 in each case. Despite this fact all genera excluding Norella were found in the Pelsonian, but often represented by different species. The species of the genera Tri- gonirhynchella, Mentzelia, Koeveskallina, Schwagerispira and Angustothyris found in Pelsonian and Illyrian faunas are different, probably for rather evolutionary, than ecological reasons. Mentzelia mentzeli is a common form in both substages, but in Vászoly the subspecies M. mentzeli baconica was identified, which was originally described from Reifling Limestone of Illyrian age. The Schwagerispira genus is often represented by the species schwageri and mojsisovicsi in Pelsonian, which are replaced in the Vászoly section by speciosa, a characteristic form of the Illyrian Schreyeralm Limestone. This basinal limestone contains the type horizon for Norella refractifrons , another element of the Vászoly fauna. In brachiopod assemblages belonging to the Balatonicus Zone Koeveskallina koeves- kalyensis and Angustothyris angustaeformis are widespread, while in Vászoly their probably younger counterparts, K. pannonica and A. sp., aff. suspecta were found. A spiriferid, Mentzelia sp., aff. ampla would fit into an evolutionary lineage leading from M. mentzeli to M. ampla, the latter known from Ladinian and Carnian. Occurrence of Pexidella sturi is also remarkable, because elsewhere in the Balaton Highland it seemed to be confined to the Avisianum Zone. All the above mentioned data suggest the Illyrian age of the brachiopod assemblage. On the other hand, the ammonoid biostratigraphy well-determines the Late Illyrian (Avisianum Zone) age of brachiopod-bearing beds, so new data could be provided on stratigraphie range of these species.
