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With this study,totally 51 gastropod species taken from Oymapınar limestone, Altınkayaformation and Aksu formation, into the Antalya Miocene basin, have beendetermined. After the description, in addition to the species have beenclassificated as systematically, their stratigraphic levels have been revealed.In the examin ed fauna, besides the species peculiar to Tethys such as (Cingula (Peringiella) ventricosella (Cerulli- Irelli, 1914),Terebralia subcorrugata d'Orbigny 1852, Cerithium (Thericium) vulgatum miocenicum Vignal, 1910, Cerithium (Tiaracerithium) pseudotiarella d'Orbigny 1852, Triphora adversa miocenica Cossmann ve Peyrot1924), some species peculiar to only Central Paratethys such as (Hydrobia) frauenfeldi frauenfeldi (Hoernes 1856), Pirenella gamlitzensis gamlitzensis (Hilber, 1879) havebeen found. The investigated species, during Lower – Middle Miocene, are ableto correlated both Tethys and Central Paratethys, while during Upper Miocenethese species are only able to corraleted Tethys.

This Paper is published in Turkish edition of the Journal (MTA Dergisi )In this study, coverage of Bivalvia fauna and its systematic specialities in Antalya Miocene basin have been explained. In the basin, 30 species of Bivalvia class obtained from Oymapınar limestone, Altınkaya formation and Aksu formation have been determined. As well as systematically classification of species, stratigraphic levels and paleogeographic distributions of them have been put forward too. According to this, species of Glossus (Cytherocardia) cf. deshayesi perlongata (Kutassy 1928) and Pelecyora (Cordiopsis) polytropa nysti (d'Orbigny 1852) are peculiar to Middle Miocene and species of Cardiocardita cf. monilifera (Dujardin 1837) is peculiar to Lower Miocene. In the study area, as well as species, characteristic for Tethys such as species such as Chlamys (Aequipecten) scabrella bollenensis (Mayer 1876), Pecten fuchsi Fontannes 1878, species such as Crassostrea gryphoides (Schlotheim 1813), Loripes (Loripes) dujardini (Deshayes 1850), Carditamera (Lazariella) (Sacco 1899), Megaxinus bellardianus (Mayer 1864), Acanthocardia (Acanthocardia) turonica (Mayer 1861), Sanguinolaria (Soletellina) labordei (Basterot 1825) and Pitar (Pitar) rudis (Poli 1795) widespreading both into Tethys and into marine stages of Central Paratethys have been found. It is striking to be met by chance firstly in the study area with species such as Glossus (Cytherocardia) cf. deshayesi perlongata (Kutassy 1928), Pelecyora (Cordiopsis) polytropa nysti (d'Orbigny 1852 and Irus (Paphirus) gregarius gregarius Partsch, 1823 known beforehand to be only Central Paratethys. In the study area whereas determined species belonging to Lower and Middle Miocene are able to be correlated with Tethys, on the other hand, Central Paratethys fauna belonging to Upper Miocene are only able to correlate with Tethys fauna.

Throughout this study, the paleogeographical and paleoecological characteristics of the samples of the Miocene aged molluscan fauna have been described which identified in Antalya and Kasaba basins, in west and central Taurus. In addition to the presence of the species belonging to Tethys realm such as Cingula ventricosella Cerulli-lrelli, Cerithium appenninicum dertosulcata Sacco, and Xenophora infundibulum (Brocchi), the Hydrobia (Hydrobia) frauenfeldi (Hoernes), Pirenella gamlitzensis gamlitzensis (Hilber), Irus (Paphirus) gregarius Partsch and Glossus (Cytherocardia) cf. deshayesi (Kutassy) type species known in marinal stages of Central Paratethys are also found. Similarly, in Kasaba basin; together with the presence of the Turritella terebralis turritissima Sacco, Conus antiquus Lamarck, Conus clavatulus d'Orbigny, Pecten benedictus Lamarck and Pecten fuschi Fontannes known only in the Tethys province, the Cerithium zejsneri Putsch, Divaricella ornata subornata Hilber, Pitar (Paradione) lilacinoides Schaffer and Venus (Antigona) burdigalensis producta Schaffer type species restricted to Central Paratethys are found. Besides, it is known that, in the investigated basins, the rest of the fauna as a whole is widespread in both provinces. In order to make contribution to the environmental interpretations, the geochemical analyses have been carried out on 14 and 16 fossil casts from Antalya and Kasaba basins respectively. In this way, the fossil casts with aragonite composition have low Mg content. The 1000 Sr/Ca ratios are propotional to salinity. Consequently, the salinity of seawater in Miocene aged Antalya basin is lower than that of Kasaba basin during Upper Burdigalian (Karpatian- Ottnangian). This result is completely in agreement with the known paleoecological characteristics of the fauna. The Antalya and Kasaba basins are similar to intermontane molasse basins in the Alps and situated in the same orogenic belt. The all paleogeographic and paleoecological results indicate that, during the evolution of the Tethys, the similar events and Paratethys like environmental conditions were developed. For this reason, the stage names have been used mutually for the investigated basins. The determination of regional stages seems to be a need for the region as having its own special conditions.

In the study, six stratigraphical section has been measured through mollusc-rich Uçarsu and Kasaba formations, outcropping at Kasaba Miocene Basin in western Taurides. By evaluating the paleogeographic and chronostratigraphic denotations of mollusc species, it has been concluded that most of the samples were Mediterranean Tethyan in origin and the other forms, such as Divaricella ornata subornata Hilber, Cerithium zejsneri Pusch and Pitar (Paradione) lilacinoides Schaffer, that was peculiar to the central Paratethys have also been determined. So, for the investigation area, the Paratethyan marine stages were pictured too. By these findings, the age of the shallow-marine Uçarsu formation has been inferred as Upper Burdigalian (Upper EggenburgianCarpathian) and that of the other shallow-marine Kasaba formation as Langhian (Lower Badenian). The former is transgressive in nature at its basal parts and characteristically regressive toward the top, while the latter, grading into the continental environment from a steady shallow marine, displays regressive character throughout. By the context of the paleontological data from Uçarsu and Kasaba formations and superposing of the (studied) units, it is suggested that the emplacement of the Yeşilbarak nappe and the Lycian nappes into the region had initiated in the Upper Burdigalian and continued until the end of the Langhian.

This study examinedthe paleontology and stratigraphy of the Neogene rock units exposed around DatçaPeninsula basing on the pelecypoda and gastropoda fauna. One of the fosilspecimens (Hydrobia tanerae n.sp.) which aredetermined from the taken measured stratigraphic sections belonging to Yıldırımlıformation was described as a new species. The age of Neogene units in theinvestigated area is determinal as Late Piacencian with the pelecypoda andgastropoda fauna. According to these marine and fresh water fauna, it is foundthat the area was a lagoon in Late Piacencian. ESR (Electron Spin Resonance)Age Method was applied on the four fossil specimens and found 1.891-1.988million years. This result supported the Late Piacencian age.

Clastic units exposing around theKılbasan village at north of the city of Karaman contain the relicts of a drylake basin. In this basin, the presence of an extensive fauna even detectablewith necked eye is noticeable. Seven of wash samples collected as pointsampling from the basin were subjected to detail works. As a result ofexaminations on the fauna, a number of 3 ostracods, 4 gastropods and 1pelecypod species characteristic for typical freshwater environment weredetermined.

A pateontotogic-stratigraphicstudy based primarly on the pelecypod and gastropod fauna was carried out atPınarhisar (Kırklareli) and its surrounding, for which previous researchershave put forward various ideas, by taking into consideration tha ages of theTertiary sediments and their relation with the Tethis which crop out in theregion. In the stratigraphic cross-section made using 8 measurements; 15, 5 and6 species of molluscan fauna were observed in the İslambeyli formation,Kırklareli limestone and Pınarhisar formation respectively: The ages of theformations were once again taken into consideration under the light of allpaleontologic data, and an approximated age was given by evaluating both thepaleontological and stratigraphic conditions. The following conclusions weremade: The age of the İslambeyli formation which represents the base of theTertiary sediments is Early Priabonian, the age of the Kırklareli limestonewhich conformably overlies the İslambeyli formation and which represents thereef carbonates is Late Priabonian and the age of the Pınarhisar formationwhich unconformably overlies the Kırklareli limestone and which hasshelf-margin and shallow sea properties, is Stampian. It was also concludedthat the age of the Balıklı serie, which conformably continues over thePınarhisar formation, is -Stampian as well, according to the paleogeographicdistribution of the present molluscan fauna, It can be seen that the majorityof it is completely the same with those in the Balcan countries; a minonty ofit is also seen in the Western European countries in Eocene. In the Oligocene,where it is not abundantly seen, the fact that the basin contains completelythe same fauna with Bulgaria shows that it is, within the area of spread of theParatethis.