Taxonomy clear
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Calcidiscus salomoniiChibanian - Serravalian
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Calcidiscus premacintyreiSerravalian - Burdigalian
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Calcidiscus pataecusChibanian - Priabonian
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Calcidiscus parvicrucisYpresian - Thanetian
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Calcidiscus tropicusTortonian - Serravalian
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Calcidiscus gallagheriAquitanian - Chattian
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Calcidiscus bicircusBartonian - Ypresian
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Cruxia ataniiLutetian - Ypresian
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Amaurolithus tricorniculatusZanclean - Tortonian
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Reticulofenestra gelidaTortonian - Serravalian
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Velonalithus emelinesalleyaeSerravalian - Langhian
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Arkhangelskiella specillataLate Maastrichtian - Late Santonian
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Arkhangelskiella paucipunctataLate Maastrichtian - Early Campanian
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Arkhangelskiella umbracrucisLate Maastrichtian - Early Coniacian
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Arkhangelskiella soyhaniorumLate Campanian - Middle Campanian
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Arkhangelskiella inclinataLate Maastrichtian - Late Turonian
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Arkhangelskiella orthocancellataLate Campanian - Early Campanian
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Arkhangelskiella cymbiformisLate Maastrichtian - Late Santonian
