Biostratigraphy and paleoenvironment of the Danian/Selandian (D/S) transition in the Southern Tethys: A case study from north Eastern Desert, Egypt
Keywords: محیط زیست; D/S boundary; Planktic and benthic foraminifera; Biostratigraphy; Paleoenvironment; Biozone; Organic-rich phosphatic shale layer;