Authors Year Title
Chao 1965 The Permian ammonoid-bearing formations of South China.
Scientia Sinica, 14 (12): 1813-1826, fig.1-4, pl.1-2; Beijing.
Chao & Liang 1974 Permian Ammonoids. In: Handbook of the Stratigraphy and Paleontology in Southwest China. [In Chinese].
Nanjing Institute of Geology and Palaeontology, Academia Sinica: 303-307, pl.159-160, Nanjing.
Liao 1978 Subclass Ammonoidea.[In Chinese].
Atlas of the Paleontology of Southwest China, Guizhou Province Part 2: Carboniferous-Quarternary: 380-439, pl.130-141; Beijing.
Zhou 1988 Lower Permian Artinskian ammonoid fauna and related biostratigraphy in South China.
Acta Paleontologica Sinica, 27 (3): 381, pl.1-2; Beijing.
Zhou 1989 Age of the Longyin Formation in Southwest Guizhou province.
Science in China (ser.B) 32: 1361-1370, 1 fig., 2 tabl., 1 pl.