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Ruan |
1991 |
Lower Upper Carboniferous cephalopods of Nilka, Western Xinjiang.
Acta Paleontologica Sinica, 30 (2): 186-211, fig.1-24, pl.1-4; Beijing.
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|
Ruzhencev & Bogoslovskaya |
1978 |
Namyurskiy etap v evolyutsii ammonodey. Pozdnenamyurskiye ammonoidei.
Trudy Paleontologicheskogo Instituta Akademiya Nauk SSSR, 167: 1-336, fig.1-108, pl.1-44; Moskva.
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