Taxonomy clear
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Calcidiscus sp._BYpresian
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Calcidiscus sp._AYpresian
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Calcidiscus tanianusBurdigalian - Chibanian
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Calcidiscus salomoniiSerravalian - Chibanian
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Calcidiscus premacintyreiBurdigalian - Serravalian
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Calcidiscus pataecusPriabonian - Chibanian
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Calcidiscus parvicrucisThanetian - Ypresian
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Calcidiscus tropicusSerravalian - Tortonian
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Calcidiscus gallagheriChattian - Aquitanian
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Calcidiscus bicircusYpresian - Bartonian
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Cruxia ataniiYpresian - Lutetian
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Amaurolithus tricorniculatusTortonian - Zanclean
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Reticulofenestra gelidaSerravalian - Tortonian
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Velonalithus emelinesalleyaeLanghian - Serravalian
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Arkhangelskiella specillataLate Santonian - Late Maastrichtian
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Arkhangelskiella paucipunctataEarly Campanian - Late Maastrichtian
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Arkhangelskiella umbracrucisEarly Coniacian - Late Maastrichtian
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Arkhangelskiella soyhaniorumMiddle Campanian - Late Campanian
