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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Ammonoidea
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Trachyceratidae
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Daxatina
Eoprotrachyceras
Frankites
Hannaoceras
Leconteiceras
Protrachyceras
Sirenites
Spirogmoceras
Trachyceras
Trachystenoceras
Vredenburgites
Welterites
Zestoceras
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Daxatina