From a critical examination of the previous papers about the Upper Eocene bryozoan faunas of NE Italy (Venetia region) and Western Carpathian Mountains (Slovakia and Hungary) it appears that there are 148 valid species (97 Cheilostomata and 50 Cyclostomata). The remarkable lithological and faunistocal affinities of the two sedimentary basins are compared and emphasized, especially with regard to the bryozoan associations. The paleogeography and relationships of these Tethyan areas are briefly examined
