Research subject. Ostracods and Givetian-Frasnian boundary deposits of the Timan-North Urals Region. Materials methods. The work was based on results studying ostracods from stratotype sections Southern Timan, which are considered referential for regional global correlations. analysis distribution intervals most significant taxa previous studies, both published archival materials Timan-Urals we...

The Late Ordovician Mass Extinction wiped out 85% of animal species in two phases (LOME1 and LOME2). kill mechanisms for the extinction are debated, but deteriorating climate expansion marine anoxia appear to have been important factors. Nevertheless, spatial extent intensity its temporal relationship with extinctions not well understood. Here, we review existing global paleoredox proxy data ba...

Abstract The Taho Formation in western Shikoku Island, Japan, consists of Triassic carbonates that formed on a seamount the Panthalassic Ocean. In order to investigate stratigraphy and paleoceanography this carbonate succession, we analyzed biostratigraphy chemostratigraphy 17.6 m‐thick section upper at stratotype area Tahokamigumi, Seiyo City. This comprises bioclastic limestone containing biv...