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Ehiro & Bando |
1985 |
Late Permian ammonoids from the Southern Kitakami Massif, Northeast Japan.
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Fujikawa & Ishibashi |
1999 |
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Xu & Wei |
1977 |
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Yichang Institute of Geology and Mineral Resources 1977: p.537-582, pl.204-218, (Geological Publishing House).
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