Taxonomy clear
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Calcidiscus parvicrucisThanetian - Ypresian
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Calcidiscus tropicusSerravalian - Tortonian
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Arkhangelskiella specillataLate Santonian - Late Maastrichtian
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Arkhangelskiella cymbiformisLate Santonian - Late Maastrichtian
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Dizeria stenostaurionEarly Albian - Late Albian
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Dizeria vandekampiorumEarly Albian - Late Albian
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Pollicenotas parcus- - Senonian
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Pollicenotas constrictus- - Senonian
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Pollicenotas enormisLate Albian - Late Santonian
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Acaenolithus matalosusLate Aptian - Early Albian
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Salomonia biperforatus- - Senonian
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Amphizygus megalopsAlbian - Santonian
