Obolorugia Zhang 1983

Zhang 1983. Phylum Brachiopoda. Xibei diqu gushengwu tuce: Shaan-Gan-Ning fence. [Paleontological atlas of northwest China. Shaanxi-Gansu-Ningxia volume. Part 2. Upper Paleozoic.], Geological Publishing House, Peking, 1983: 3-40. Chapter pagination: 244-425