ecofactbook
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species
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Animalia
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Mollusca
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Cephalopoda
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Nautilida
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Nautilidae
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Sactoceras
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Sactoceras depressum
Sactoceras inaii
Sactoceras kobayoshii
Sactoceras liaotungense
Sactoceras niuhsinense
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Sactoceras depressum