Abstract: In this work, biozones have been established and compared with "Standard Calpionellid Zones" based on theinvestigation of Calpionellidae in Upper Tithonian and Valanginian period locating between the Eastern Bayburt and the KopMountains.The results of the examined samples obtained from the measured stratigraphie sections of the surveyed area during thestudies for my Ph.D. and Associate Professorship as Mow,Four Range Zones consisting of Crassieollaria, Calpionelia, Calpionellopsis and Calpionellites; fiveAcme Zones consisting of Crassicollaria intermedia (A), Calpionella alpina (B), Calpionella elliptica(C), Calpionellopsis simpiex-Calpionellopsis oblonga (D) and Calpionellites darderi (E); and ten subzones consisting of A^-^-A^ B|-B2? D^^^^Dj and Ej« ^ have been established and described.In the establishment of Calpionellid Biozones, while stating species association in Biozones, because of the importanceof evolution of Ulis group changeable morphologic features of species have also been taken in  care.A map of world showing the studies on different localities of tehlys until today has been drawn* In this particular work,Caipioneilites darderi (E) Acme Zone has been investigated by being divided in Ej-E^ subzones for the first time anda table comparing some localities in Tethys and Biozones in the study area has been prepared.It has been realized through the paleogeographic distribution of Calpionellids -being a group of planktic fossil- in Tethysthat this group lives in the warm water of bathyal zone.