| Taxon Code | 18 |
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| Taxon | Paleozoic and Mesozoic Gastropoda, Monoplacophora and Hyolitha (Gastropoda) |
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| Scientific name | Cyclonema (?) sonrinensis |
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| Author | Kobayashi, 1931 |
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| Year | 1931 |
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| Reference | Bull. Geol. Surv. Chosen, vol. 11, no. 1, p. 36, pl. 2, fig. 9 |
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| Type specimen | Lectotype: UMUT PM0190 |
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| Type locality | Keiho - ri, Kenjiho, Koshu - gun, Huanghae - do (Kokai - do), North Korea |
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| Latitude | |
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| Longitude | |
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| Formation name | Shorin bed, Chosen Group |
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| Age | Lower Ordovician |
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| Remarks | |
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| Special Papers No. | 39 |
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| Page | 379 |
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| Extractor | KASE, Tomoki |
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| Comment | |
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