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Kuzina |
1999 |
Biostratigraphic Distribution of Lower Carboniferous Ammonoids in Northern Russia.
In: Olóriz,F. & Rodríguez-Tovar,F.J., Advancing Research on Living and Fossil Cephalopods, 505-519, 7 figs., New York.
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Ruzhencev |
1975 |
Ammonoidei i khronostratigrafiia Karbona vostochnoi Sibiri.
Paleontologicheskii Zhurnal, 1975 (2): 28-45, fig.1-7, pl.1,2; Moskva.
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Wang |
1981 |
Carboniferous ammonoids from Eastern Xinjiang.[In Chinese, with English summary].
Acta Palaeontologica Sinica, 20 (5): 468-481, fig.1-12, pl.1,2; Beijing.
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