Orbitolina (Columnorbitolina) Zhang 1982

Zhang 1982. Orbitolina (Foraminifera) from Xizang. Zhongguo Kexueyuan Qingzang Gaoyuan Zonghe Kexue Kaocha Dui. [The series of the Comprehensive Scientific Expedition to the Qinghai-Xizang Plateau]. Xizang gushengwu. [Palaeontology of Xizang]. Volume 4., Science Press, Peking, 1982: 107-151. Chapter pagination: 51-80