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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Clydonautilidae
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Proclydonautilus
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Nautilus gasteroptychus
Nautilus goniatites
Nautilus spirolobus
Nautilus triadicus
Proclydonautilus natosini
Proclydonautilus stantoni
Proclydonautilus ursensis
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