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The inner structures of Late Permian (Murgabian) terebratulid genera Mongolina, Morrisina, and Jisuina from Jisu Honguer locality of Inner Mongolia (North China) were studied. As a result is- the genus Morrisina is the junior synonym of genus Hemiptychina. The validity of the family Heterelasminidae Licharev, 1956 was proofed.