This paper describes Middle Miocene (Badenian) shark teeth from Serbia and discusses their geographical distribution at other localities of the Central Paratethys. The shark teeth originate from Višnjica (near Belgrade), from Višnjica Clay, or the 'Pleurotoma Clay'. The variety of sharks is very low, but according to these fossils Višnjica is the richest among Serbian localities. The sharks teeth reported in the paper belong to the following taxa: Otodus (Megaselachus) megalodon (AGASSIZ, 1835), Hemipristis serra AGASSIZ, 1835 and Odontaspididae indet. The high diversity of invertebrates (molluscs, echinoids, corals etc.) and other coeval fossil assemblages indicate a warm period (the Middle Miocene Climatic Optimum), which preceded the Middle Miocene Climatic Transition.
The main goal of the paper is, based on research and analysis of the material base and tourist turnover of rural tourist households (RTHs), in the period from 2014 to 2019, to point out to the dynamics of development and the current level of development and utilization of the tourist offer of this sector in Serbia. Quantitative data on accommodation facilities in rural areas of the Republic of Serbia in six years period (2014-2019) are analyzed. In addition to research, various scientific methods were used: the inductive-deductive method, the method of analysis and synthesis and the method of observation. Based on the analysis of quantitative and qualitative aspects of supply it was concluded that a lack of international standards and quality guarantees was noticed, as well as problems related to adaptation, registration and categorization of the RTHs, which confirmed the basic research hypothesis.
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