Is Cyprideis agrigentina Decima a good paleosalinometer for the Messinian Salinity Crisis? Morphometrical and geochemical analyses from the Eraclea Minoa section (Sicily)
“…Inside the Eastern Paratethys L. multituberculata is widely present in South Caspian basin: from the Pontian (Adzhiveli section) and Akchagylian -Aspheronian deposits (Goychay and Hajigabul sections) of Azerbaijan (Van Baak et al, 2013Lazarev et al, 2019) and from Aspheronian of Turkmenistan (Agalarova et al, 1961;Mandelstam et al, 1962;Yassini, 1986). It is also known from the Pontian of the Taman Peninsula in Russia , successions of Pontian age in the eastern Black Sea region of Turkey (Tunoğlu and Ünal, 2001) and Lago Mare (late Messinian) deposits of Italy and Sicily (Gliozzi et al, 2005;Grossi et al, 2015). Ecology.…”
Section: Candona Spmentioning
confidence: 99%
“…Ecology. L. multituberculata has been mentioned by Grossi et al (2015) as part of a "Cyprideis-Loxoconchidae assemblage", representing low mesohaline and shallow water conditions. Living representatives of the species were described by Gofman (1966), Yassini (1986) and Gliozzi and Grossi (2008) throughout nowadays remnants of the Paratethys (Black Sea, Caspian Sea, Aral Sea) at salinities of 11,5 -18,25‰.…”
Section: Candona Spmentioning
confidence: 99%
“…Ecology. Together with Loxoconcha muelleri (Méhes) and Cyprideis agrigentina Decima, L. eichwaldi has been described from low mesohaline environments (Grossi et al, 2015). Recent living Loxoconcha species are reported from mesohaline to euryhaline waters worldwide (Gliozzi, 1999).…”
The upper Miocenelower Pliocene sedimentary succession of the Denizli Basin (SW Anatolia) displays a unique record of undisturbed stratigraphy and provides an excellent opportunity to study long-term palaeoecological changes. This paper documents the ostracod assemblages of two sections of the Neogene Kolankaya Formation, resulting in the following taxonomic, palaeobiogeographic and ecological interpretations. The ostracod assemblages from the two sections consist of a mixture of oligohaline to mesohaline tolerant taxa but expose fundamental differences in their composition. This is reflected by the fact that out of 32 determined species, both sections only have 3 in common. In the stratigraphic older succession, the diverse ostracod fauna resembles taxa known from the Paratethys. Faunal relations to the brackish lake habitats of the Euxinic and Pannonian basins are apparent and the palaeobiogeographic significance of the fauna is discussed. The ostracod association of the younger section indicates a low brackish water habitat with fluctuating salinities, most likely in the oligohaline range. The ostracod assemblage of the Kolankaya Formation only permits a broad age assignment to the late Mioceneearly Pliocene.
“…Inside the Eastern Paratethys L. multituberculata is widely present in South Caspian basin: from the Pontian (Adzhiveli section) and Akchagylian -Aspheronian deposits (Goychay and Hajigabul sections) of Azerbaijan (Van Baak et al, 2013Lazarev et al, 2019) and from Aspheronian of Turkmenistan (Agalarova et al, 1961;Mandelstam et al, 1962;Yassini, 1986). It is also known from the Pontian of the Taman Peninsula in Russia , successions of Pontian age in the eastern Black Sea region of Turkey (Tunoğlu and Ünal, 2001) and Lago Mare (late Messinian) deposits of Italy and Sicily (Gliozzi et al, 2005;Grossi et al, 2015). Ecology.…”
Section: Candona Spmentioning
confidence: 99%
“…Ecology. L. multituberculata has been mentioned by Grossi et al (2015) as part of a "Cyprideis-Loxoconchidae assemblage", representing low mesohaline and shallow water conditions. Living representatives of the species were described by Gofman (1966), Yassini (1986) and Gliozzi and Grossi (2008) throughout nowadays remnants of the Paratethys (Black Sea, Caspian Sea, Aral Sea) at salinities of 11,5 -18,25‰.…”
Section: Candona Spmentioning
confidence: 99%
“…Ecology. Together with Loxoconcha muelleri (Méhes) and Cyprideis agrigentina Decima, L. eichwaldi has been described from low mesohaline environments (Grossi et al, 2015). Recent living Loxoconcha species are reported from mesohaline to euryhaline waters worldwide (Gliozzi, 1999).…”
The upper Miocenelower Pliocene sedimentary succession of the Denizli Basin (SW Anatolia) displays a unique record of undisturbed stratigraphy and provides an excellent opportunity to study long-term palaeoecological changes. This paper documents the ostracod assemblages of two sections of the Neogene Kolankaya Formation, resulting in the following taxonomic, palaeobiogeographic and ecological interpretations. The ostracod assemblages from the two sections consist of a mixture of oligohaline to mesohaline tolerant taxa but expose fundamental differences in their composition. This is reflected by the fact that out of 32 determined species, both sections only have 3 in common. In the stratigraphic older succession, the diverse ostracod fauna resembles taxa known from the Paratethys. Faunal relations to the brackish lake habitats of the Euxinic and Pannonian basins are apparent and the palaeobiogeographic significance of the fauna is discussed. The ostracod association of the younger section indicates a low brackish water habitat with fluctuating salinities, most likely in the oligohaline range. The ostracod assemblage of the Kolankaya Formation only permits a broad age assignment to the late Mioceneearly Pliocene.
“…This hypothesis was not sustained by the results of a recent paper by Grossi et al (2015). After close examination of C. agrigentina and C. torosa, the authors concluded that there were significant differences between the ecophenotypical behaviour of the two species.…”
Section: Originmentioning
confidence: 83%
“…The studies of Ligios & Gliozzi (2012) and Grossi et al (2015) clearly illustrate that detailed morphological analysis is required to distinguish between Cyprideis species. This was also the case for research carried out by Gross et al (2008), who demonstrated that Cyprideis species from Lake Pannon (Austria) with strong resemblance to each other could be separated only by applying elaborate morphometric techniques.…”
The modern distribution of the euryhaline ostracod Cyprideis torosa (Jones, 1850) is illustrated on three geographical maps, visualizing its occurrence in Europe, Africa and Asia. The presence of other Cyprideis species, within the distribution area of C. torosa, is discussed. The species has also been recorded from Australia, but it appears now that its presence and that of other Cyprideis species, is a complex issue, that requires new research. Passive transport by migratory birds is briefly dealt with, by mentioning some interesting new examples from the literature, and by linking the distribution in China to the Central Asian Flyway of waterfowl. Cyprideis torosa is a single, highly variable, polymorphic and widely distributed species, with locally different populations. This variability is commented upon and put in a broader context. An imaginary line, connecting the peripheral records, delineates the distribution area of the species. The most interesting aspect is the very pronounced north-south distribution. The species occurs above the Arctic Circle in Europe and Asia but also in South Africa, illustrating that it is a eurythermal species that has adapted to very divergent temperature regimes.
The first deep-sea drilling expedition in the Mediterranean chanced upon unanticipated discoveries when recovering deeply buried sediments of Late Miocene age that had once accumulated in ultra-shallow water and had later experienced subaerial exposure. Among these deposits were potassium and magnesium chlorides, desiccation cracks, fluvial gravels and shale bearing bottom-dwelling diatoms requiring sunlight, all indicative that the Mediterranean had evaporated one or more times to near dryness during what became called the Messinian Salinity Crisis. The initial presentation of these findings in 1973 was met with hesitancy. Had the present 2 to 4 km deep Mediterranean Basins been much shallower? How does one explain sediment sandwiched between beds of anhydrite and gypsum that hosted microfossils belonging to both ocean seawater and species that lived in fresh-to-brackish water lagoons? Did all of the evaporites originate on salt pans rimmed by alluvial aprons, or was there a deep-water period during which most of the 1 to 2 km thick layer of salt layer had arrived? How do the Late Miocene evaporites and mudstones outcropping in mobile belts along numerous Mediterranean margins fit with the scenario of a near empty Mediterranean? These inquiries are addressed in the style of a historical narrative reviewing 50 years of investigations by researchers turning their attention to the peripheral deposits, including those from the Paratethys. The stable isotopes of oxygen, carbon, sulfur, deuterium and strontium become crucial evidence in support of a substantial Mediterranean desiccation that harmonizes what appears to be unresolved conflicts among prior and even contemporary interpretations.
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