Planktonic Foraminiferal biostratigraphy of Jaddala Formation in well (K-152), Northern Iraq

Many species of planktonic foraminifera were identified from the Jaddala Formation from well (K-152)of depth (1010-900 m.) northern Iraq. The recorded planktonic foraminifera assemblages permits the recognition of four biozones these are (from top to bottom):Globigerinatheka subconglobata biozone (p11), Acarinina bullbrooki biozone (p10), Acarinina Pentacamerata biozone (p9) 1- Morozovell aragonensi biozone (p8) and On the basis of biocorrelation with previous works Early to Middle Eocene age confirmed for the Jaddala Formation at the studied section.