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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Cycloceras
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Cycloceras aokii
Cycloceras austini
Cycloceras ballianum
Cycloceras clintoni
Cycloceras gaspense
Cycloceras junciforme
Cycloceras louderbacki
Cycloceras manchuriense
Cycloceras marginale
Cycloceras shensiense
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Cycloceras aokii