Dr. Nagy I. Zoltán szerk.: Fragmenta Mineralogica Et Palaentologica 4. 1973. (Budapest, 1973)

litaceae is very striking. This group participates in 59.56 % in the Swiss fauna, and in 58.30 % in the Bakony fauna. There is a greater divergence as regarde the Scaphitaceae. Compared to their 1.30 % of the St. Croix fauna, the ration in the Balcony is 11.95 %. The Bakony material of 49 specimens uncontestably represent a species. Some fragments has to be designated, however, by an open name, principally owing to differences in size, this feature being insufficient for a taxonomic separation (NAGY, 1971:24). Renz did not indicate the superf

amily Haplocerataceae

. There was found also in the Bakony merely a single surely recognizable fragment of the genus Aconeceras, representing the fauna in 0.24 %, Tee representatives of the Desmoceratids participate in 1.72 % in the Vraconnian stratotype. They appear in 2.68 % in the Bakony fauna. The species Besmoceras (D.

) latidor

satum (Michelin) was absent from the Bakony fauna I studied. The two Puzosia species from the Bakony (NAGY, 1971:24-25) were proportionate with, e.g. the two species each from the Greensand and Vocontian rifts. The proportion again shifts concerning the Hoplitaceae. These compose 10.82 % of the Swiss fauna, but merely 0.98 % of the Bakony material. The proportion of the Acanthocerataceae is again more favourable. The fauna of the stratotype consists of 2 5.00 % of this group, while the 95 exemplare, representing the Pormenkreis of about 9 species, originating from the Bakony constitute 23.17 % of the fauna. Stratigraphical summary In a stratigraphie respect, the Vraconnian of the Bakony Range