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Harpoceras chrysanthemum (Yokoyama) Lectotype Hirano, H., 1975a pl. J-10, fig. 1 Mesozoic | Mollusca : Cephalopoda Material Reports, no. 15, p. 23. |
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Harpoceras chrysanthemum (Yokoyama) Hirano, H., 1975a pl. J-10, fig. 4 Mesozoic | Mollusca : Cephalopoda Material Reports, no. 15, p. 23. |
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