Review of the ammonite genus Pseudokossmaticeras Spath, 1922 from the uppermost Campanian–lower Maastrichtian in Bulgaria

New data on the ammonite genus Pseudokossmaticeras Spath, 1922 have been obtained from several uppermost Campanian–lower Maastrichtian strata of Fore-Balkan Mountains (Bulgaria). A review earlier Bulgarian records is also presented. The following species are here described and illustrated: brandti (Redtenbacher, 1873), P. galicianum (Favre, 1869), muratovi Michailov, 1951 tercense (Seunes, 1892). Our newly were constrained by inoceramid zonation that has recently proposed for successions area. Hence, importance correlation with other occurrences across Europe.