| نقل قول | Ishihara, H., 1990, Study on the systematics and fishery resources of the North Pacific skates (Pisces: Chondrichthyes: Rajidae).. Tokyo University. 186 p. Ph.D. dissertation. |
| مرجع | 41249 Ishihara, H., 1990 |
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| Named Used as Valid | Dipturus laevis |
| Comment | Cited in Ref. 41250. Not actually seen. Valid name used similar to citing reference. |
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