The lithostratigraphy of the P–E transition at Naqb Assiut, Western Desert, Egypt is studied.
The biostratigraphy of this transition is carried out and four planktonic foraminiferal zones are defined.
The P/E boundary is documented and discussed.
The benthonic foraminiferal fauna during this interval are analysed and discussed.
The Paleobathymetrical and paleoenvironmental changes across the P/E boundary are explained.