Authors	Year	Title
Ruzhencev	1958a	Dva novykh roda goniatitov v nizhnem Namyure yuzhnogo Urala. Dokl. AN. SSSR, 122: 293-296, fig.1-2, pl.1; Moskva.
Ruzhencev & Bogoslovskaya	1971a	Namiurskii etap v evoliutsii ammonodei. Rannenamiurskie ammonoidei. Trudy Paleontologicheskogo Instituta Akademiya Nauk SSSR, 133: 1-382, fig.1-89, pl.1-40; Moskva.
Yang	1986	Late Early Carboniferous ammonoids from Chenmazijing of Zhongning, Ningxia. Acta Paleontologica Sinica, 25 (3): 260-271, fig.1-21, pl.1-2; Beijing.