The collection of cephalopods from eight sampling horizons within the Olenidsletta Member, Valhallfonna Formation, Floian–Dapingian, Profilstranda and nearby Profilbekken, Ny Friesland, Spitsbergen, resulted in detection 31 species, 20 genera, 12 families Ellesmerocerida, Endocerida, Riocerida, Dissidocerida, Orthocerida, Tarphycerida, Oncocerida. Of these, five genera (Ethanoceras gen. nov., H...

The İstanbul-Zonguldak Tectonic Unit is regarded as the easternmost fragment of Avalonia-Carolina and stands for Far East Avalonia. Its stratigraphy also characterized by discontinuous sedimentation from Late Ediacaran to Carboniferous. In western part block, known İstanbul Terrane, Gözdağ Formation represented lagoonal sedimentary rocks consisting shale-sandstone with limestone Middle Ordovici...