Oppelia echizenica Yokoyama Holotype Missing Yokoyama, M., 1904b p. 8, pl. 1, fig. 7, 7a Mesozoic | Mollusca : Cephalopoda Material Reports, no. 2, p. 300. |
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Perisphinctes (Grossouvria) Hikii Yokoyama Syntype Yokoyama, M., 1904b p. 5, pl. 1, fig. 2 Mesozoic | Mollusca : Cephalopoda Material Reports, no. 2, p. 300. |
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Perisphinctes (Grossouvria) Hikii Yokoyama Syntype Yokoyama, M., 1904b p. 5, pl. 1, fig. 3 Mesozoic | Mollusca : Cephalopoda Material Reports, no. 2, p. 300. |
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Perisphinctes (Grossouvria) Matsushimai Yokoyama Holotype Yokoyama, M., 1904b p. 3, pl. 1, fig. 1 Mesozoic | Mollusca : Cephalopoda Material Reports, no. 2, p. 300. |
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Perisphinctes (Biplices ?) Kochibei Yokoyama Holotype Yokoyama, M., 1904b p. 7, pl. 1, fig. 5 Mesozoic | Mollusca : Cephalopoda Material Reports, no. 2, p. 300. |
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Perisphinctes (Biplices) kaizaranus Yokoyama Holotype Yokoyama, M., 1904b p. 6, pl. 1, fig. 4, 4a Mesozoic | Mollusca : Cephalopoda Material Reports, no. 2, p. 300. |
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Perisphinctes (Ataxioceras) sp. Yokoyama, M., 1904b p. 8, pl. 1, fig. 6 Mesozoic | Mollusca : Cephalopoda Material Reports, no. 2, p. 300. |
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Hildoceras chrysanthemum Yokoyama Lectotype Yokoyama, M., 1904b p. 11, pl. 2, fig. 1 Mesozoic | Mollusca : Cephalopoda Material Reports, no. 2, p. 300. |
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Hildoceras chrysanthemum Yokoyama Paralectotype Yokoyama, M., 1904b p. 11, pl. 2, fig. 2 Mesozoic | Mollusca : Cephalopoda Material Reports, no. 2, p. 300. |
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Hildoceras chrysanthemum Yokoyama Paralectotype Yokoyama, M., 1904b p. 11, pl. 2, fig. 3 Mesozoic | Mollusca : Cephalopoda Material Reports, no. 2, p. 300. |
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Hildoceras chrysanthemum Yokoyama Paralectotype Yokoyama, M., 1904b p. 11, pl. 2, fig. 4 Mesozoic | Mollusca : Cephalopoda Material Reports, no. 2, p. 300. |
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Hildoceras Inouyei Yokoyama Paralectotype Yokoyama, M., 1904b p. 13, pl. 2, fig. 5 Mesozoic | Mollusca : Cephalopoda Material Reports, no. 2, p. 300. |
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Hildoceras Inouyei Yokoyama Lectotype Yokoyama, M., 1904b p. 13, pl. 2, fig. 6 Mesozoic | Mollusca : Cephalopoda Material Reports, no. 2, p. 300. |
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Hildoceras densicostatum Yokoyama Lectotype Yokoyama, M., 1904b p. 12, pl. 3, fig. 1 Mesozoic | Mollusca : Cephalopoda Material Reports, no. 2, p. 300. |
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Hildoceras densicostatum Yokoyama Paralectotype Yokoyama, M., 1904b p. 12, pl. 3, fig. 2 Mesozoic | Mollusca : Cephalopoda Material Reports, no. 2, p. 300. |
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Coeloceras subfibulatum Yokoyama Lectotype Yokoyama, M., 1904b p. 15, pl. 3, fig. 6 Mesozoic | Mollusca : Cephalopoda Material Reports, no. 2, p. 301. |
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Coeloceras subfibulatum Yokoyama Paralectotype Yokoyama, M., 1904b p. 15, pl. 3, fig. 3 Mesozoic | Mollusca : Cephalopoda Material Reports, no. 2, p. 301. |
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Coeloceras subfibulatum Yokoyama Paralectotype Yokoyama, M., 1904b p. 15, pl. 3, fig. 4 Mesozoic | Mollusca : Cephalopoda Material Reports, no. 2, p. 301. |
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Coeloceras subfibulatum Yokoyama Paralectotype Yokoyama, M., 1904b p. 15, pl. 3, fig. 5 Mesozoic | Mollusca : Cephalopoda Material Reports, no. 2, p. 301. |
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Harpoceras sp. Yokoyama, M., 1904b p. 14, pl. 4, fig. 1 Mesozoic | Mollusca : Cephalopoda Material Reports, no. 2, p. 301. |