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Kopaninoceras kobayshii Niko, Hamada & Yasui Holotype Niko, S. et al., 1989 p. 61, fig. 2A,B Paleozoic | Mollusca : Cephalopoda Material Reports, no. 33, p. 41. |
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Protokionoceras fessicancellatum Kobayashi Niko, S. et al., 1989 p. 64, fig. 2D,E; fig. 3A–D Paleozoic | Mollusca : Cephalopoda Material Reports, no. 33, p. 41. |
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