To the present knowlege according to DERCOURT et al. (1985) the following Upper Cretaceous rudist subprovinces in Slovenia can be distinguished from the North to the South:1. ...Carpathian-Balcanic-Pontidian subprovince2. Transitional subprovince and3. Apulian-Tauridian-intraoceanic subprovince.Rudist deposits of the first subprovince occur in northeastern Slovenia in Pohorje. These deposits contain representativesof the genera Vaccinites, Radiolites and Lapeirouseia. Rudist faunas of the transitional subprovince existed in the regions of the Central Slovenia (Inner Dinarids). In this area rudists and other shallow marine organisms were transported into flysch and deep-marine basins within olistoliths (allochtonous fauna) or as individual specimens. The third subprovince comprise carbonate platformes with rudist associations developed in conditions of the warm and shallow seas.
The Santonian-Campanian limestones of Nanos Mountain are mainly characterized by wackestone-packstone with benthic foraminifers, thaumatoporellaceans and rudists. Rudists in growth position are rare ...and rudist congregations are found only in bouquets with less than ten individuals. Rudist shells are chaotically deposited in beds and frequently show signs of bioturbation and erosion. The analyzed sequence from Nanos Mountain testifies an inner shelf environment in a ramp-like depositional setting. In the lower part of the sequence, rudist assemblages are characterized by abundant hippuritids and radiolitids whereas benthic foraminifers are rare and poorly preserved. In the upper part of the sequence, rudist assemblages consist of abundant radiolitids and rare hippuritids. Benthic foraminifers are usually well-preserved and the presence of the Keramosphaerina tergestina (Stache) is recorded. The vertical distribution of rudist and foraminifer assemblages with the presence of K. tergestina reflect sea level changes in an inner shelf environment during Santonian-Campanian.
On the basis of the characteristic fossil associations biostratigraphic subdivision has been carried out in continuously deposited Upper Cretaceous sedimentary succession of the Kočevje and Gorski ...Kotar area. Relying on macropaleontologic data it has been possible to define almost all assemblage zones being usedfor biozonation of the Upper Cretaceous deposits in Outer Dinarides.
The hippuritids species Hippuritella lapeirousei (Goldfuss, 1840), Hippuritella nabresinensis (Futterer, 1893) and Hippuritella heritschi (Kühn, 1947)vigere studied through biometrical analysis. For ...this purpose, the areas of three morphological characters which are related by their biological functions (as describedby Realy, 1992) were measured on transversal sections of lower valves.These morphometrical values are: a) shell area (Sa), b) inner area (la) and c) pillars area (Pl-P2a). This analysis highlighted a morphological similarity between HI. nabresinensis and HI. heritschi, meanwhile the morphometric values for HI.lapeirousei showed to be different.
An entirely preserved large specimen of Upper Cretaceous rudist Psedopolyconites slovenicus n. sp. is described,characterized by the low and broad lower valve surrounded by a thick envelope of tiny ...straight tubules. The specimenwas redeposited in Paleocene from the northern edge of Adriatic-Dinaric carbonate platform into a marginalpart of the flysch basin.
To the present knowlege according to DERCOURT et al. (1985) the following Upper Cretaceous rudist subprovinces in Slovenia can be distinguished from the North to the South:1. ...Carpathian-Balcanic-Pontidian subprovince2. Transitional subprovince and3. Apulian-Tauridian-intraoceanic subprovince.Rudist deposits of the first subprovince occur in northeastern Slovenia in Pohorje. These deposits contain representativesof the genera Vaccinites, Radiolites and Lapeirouseia. Rudist faunas of the transitional subprovince existed in the regions of the Central Slovenia (Inner Dinarids). In this area rudists and other shallow marine organisms were transported into flysch and deep-marine basins within olistoliths (allochtonous fauna) or as individual specimens. The third subprovince comprise carbonate platformes with rudist associations developed in conditions of the warm and shallow seas.