Mallines are Patagonian wetlands characterized by permanent waterlogging on its soils, sustaining small shallow lakes that hosts a vast biodiversity. In these ecosystems, aquatic plants (i.e. macrophytes) develop different life forms adapted to humid conditions, allowing them regulate the physical and chemical conditions of mallín. A distinctive characteristic Patagonia is exponential west-east...

The sulphur isotopic composition of dissolved sulphate in seawater has varied considerably through time. Certain time intervals are characterised by distinct variations and a relatively high rate of change. These relatively rapid fluctuations allow for correlation of sediment sections using sulphur isotopes. Sulphur isotope reconstructions based on the analysis of carbonate associated sulphate ...

We describe the remains of Aralocricetodon Bendukidze, 1993; Bagacricetodon Gomes Rodrigues et al., 2012; Eocricetodon Wang, 2007; Witenia de Bruijn et al., 2003 and Paracricetodon Schaub, 1925 (Cricetidae, Rodentia, Mammalia) from the Taatsiin Gol and Taatsiin Tsagaan Nuur areas (Mongolia). The studied material (comprising 128 teeth) stems from 9 localities and 23 fossil layers spanning a time...

The Ediacaran Global Stratotype Section and Point has now been defined at the base of the Nuccaleena Formation in the Flinders Ranges National Park, South Australia. This GSSP marks the end of a major glacial epoch. In the absence of definitive biozones marking the base of the Ediacaran, the utility of this “cap carbonate’ for correlation will depend on the verification of a global fingerprint ...

On the basis of stratigraphic ranges reported calcareous nannfossils for several species, two sections Shiranish Formation from Hiran in Erbil Governorate and Smaqoli area Sulaimaniya Governorate, Northern Iraq, are analyzed. Four biozones visible examined region, grouped as follows oldest to youngest: Uniplanarius gothicus Interval zone; Tranolithus phacelosus Rienhardtites lives Micula murus ...

Age and paleoenvironment of part the Damlouk Member, Ratga Formation from a surface section in Iraqi Western Desert are investigated. Twenty-nine species Larger Benthic Foraminifera (LBF) belonging to 13 genera recognized studied section. The LBF assemblage is dominated by following groups, Nummulites, Alveolina, Rotalia, Lockhartia. Two corals with fragments bryozoan, red algae mollusca had al...

Investigations on the calcareous nannofossils of Gulneri Formation are being done in northern Iraqi Dokan and Pushen areas, Sulimani, Northern Iraq. In this work, one biozone was established based results a detailed examination used to identify fifty species nannofossils; Quadrum gartneri Biozone (CC11) Lucianorhabdus maleformis (CC12) section, although study, three biozones were suggested; Mic...

A biostratigraphic study based on calcareous nannofossils was performed on the chalky limestone from the Abderaz Formation in the Mozduran section (Kopet Dagh basin, NE Iran). Semiquantitative estimates of total nannofossil and single species abundances showed that calcareous nannofossil assemblages are common and their preservation is good. In this study37species have been identified in chalky...