Taxonomy clear
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Calcidiscus premacintyreiSerravalian - Burdigalian
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Calcidiscus parvicrucisYpresian - Thanetian
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Calcidiscus tropicusTortonian - Serravalian
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Cruxia ataniiLutetian - Ypresian
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Amaurolithus tricorniculatusZanclean - Tortonian
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Arkhangelskiella specillataLate Maastrichtian - Late Santonian
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Arkhangelskiella cymbiformisLate Maastrichtian - Late Santonian
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Dizeria stenostaurionLate Albian - Early Albian
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Dizeria vandekampiorumLate Albian - Early Albian
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Pollicenotas parcusLate Campanian - Early Campanian
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Pollicenotas constrictusEarly Maastrichtian - Early Campanian
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Pollicenotas enormisLate Santonian - Late Albian
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Percivalia nebulosaEarly Valanginian - Middle Berriasian
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Salomonia biperforatusEarly Campanian - Early Coniacian
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Hattneria levisEarly Maastrichtian - Late Campanian
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Amphizygus megalopsLate Coniacian - Late Albian
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Karoulimorfi asynithisSelandian - Danian
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Asinithistimorfi aubryaeThanetian - Selandian
