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Authors |
Year |
Title |
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Nikolaeva |
1999 |
Ammonoidei iz Bogdanovskogo gorizonta (Srednii Karbon) Yuzhnogo Urala. [In Russian, with English summary: Ammonoids of the Bogdanovsky Horizon (Middle Carboniferous) of the South Urals].
Paleontologicheskii Zhurnal, 1999 (1): 12-19, 2 figs. 1 pl., Moskva.
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Ruan & Zhou |
1987 |
Carboniferous cephalopods in Ningxia Hui Autonomous Region. [In Chinese, with Engl. summary].
Namurian Strata and Fossils of Ningxia, China: 55-177, 78 text-figs., 15 pls., Nanjing.
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|
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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.
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|
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.
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