Fossil specimens of the exclusively oceanic calcareous nannoplankton were found only in the upper 200 m of the Cape Roberts Project 3 (CRP-3) cores. These assemblages are depauperate and sporadic in occurrence. The majority of the assemblages contain fewer than 4 species, indicating a severe palaeoecological restriction. The clear domination of these assemblages by reticulofenestrid species, co...

A 95 m thick succession of grey siliceous limestone and marl on Mount Rettenstein in the Northern Calcareous Alps allowed us to study well-preserved diverse radiolarian assemblages across Sinemurian–Pliensbachian boundary. The distribution 31 most characteristic species is presented. Ammonites Jamesoni Subzone, topmost subzone Zone, have been previously found upper part section. data are comple...

The variations in assemblages of calcareous nannofossils are tracked the Dakhla and Tarawan Formations exposed at Gebel Nezzazat (central Sinai, Egypt). Five nannofossil biozones, namely NP2/3, NP4, NP5, NP6, NP7/8 identified. A distinct marker bed related to Latest Danian Event (LDE) occurs within Fm. earliest representative fasciculiths, Lithoptychius schmitzii, first just below LDE is follow...

A reconstruction of the last 2,000 years BP environmental and oceanographic changes on western margin Spitsbergen was performed using a multidisciplinary approach including fossil assemblages diatoms, planktic benthic foraminifera calcareous nannofossils use geochemistry (X-ray fluorescence spectroscopy, X-ray diffraction). We identified two warm periods (2,000–1,600 1,300–700 BP) that were ass...