The Upper Cretaceous Bolinxiala Formation, based on a type section at Bolin of Zanda, southwestern Tibet, mainly consists of marls and limestones. Planktonic foraminiferal fossil assemblages identified from the Bolinxiala Formation at Bolin, Zanda, southwestern Tibet, give an age of latest Albian to Maastrichitan. The fossil contents of the Bolinxiala Formation allow its correlation with successions across a platform-to-basin transect of the Late Cretaceous Tethyan Himalaya passive margin. The results indicate that the Bolinxiala Formation in Zanda has a much longer duration than that of the Zongshan Formation. Therefore, the Bolinxiala Formation should not be substituted by the Zongshan Formation.