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Orthoceras coreanicum Kobayashi Syntype Kobayashi, T., 1928 p. 181, pl. 18, fig. 6 Paleozoic | Mollusca : Cephalopoda Material Reports, no. 2, p. 59. |
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Orthoceras coreanicum Kobayashi Syntype Kobayashi, T., 1928 p. 181, pl. 19, fig. 3a-c Paleozoic | Mollusca : Cephalopoda Material Reports, no. 2, p. 59. |
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