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?Hippoglossus americanus Gill, 1864
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?Hippoglossus gigas Swainson, 1839
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?Hippoglossus groenlandicus Gìnther, 1862
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Hippoglossus hippoglossus Cuvier, 1816
- Pleuronectes hippoglossus Linnaeus, 1758; (valid as)
- Hippoglossus vulgaris Fleming, 1828; (synonym)
- Hippoglossus linnei Malm, 1877; (synonym)
- Hippoglossus linnei Malm, 1877; (unneeded replacement)
- Hippoglossus linn©i Malm, 1877; (misspelling)
- Hippoglossus hippoglossus Robins & Ray, 1986
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?Hippoglossus ponticus Bonaparte, 1846
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Hippoglossus septentrionalis
- Hippoglossus septentrionalis Thon, 1831?; (unavailable, no features)
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Hippoglossus stenolepis Schmidt, 1904
- Hippoglossus stenolepis Schmidt, 1904; (unavailable, no features)
- Hippoglossus hipppoglossus camtchaticus Rendahl, 1931; (synonym)