Taxonomy clear
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Helicosphaerella theodoridisiiLatdorfian - Serravalian
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Helicosphaerella obliquaLatdorfian - Serravalian
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Helicosphaeroides watkinsiiAquitanian - Burdigalian
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Helicosphaeranudus walbersdorfensisSerravalian - Messinian
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Helicosphaera leesiaeLatdorfian - Burdigalian
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Helicosphaeroides magnificaAquitanian - Langhian
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Girgisia gammationYpresian - Lutetian
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Pontosphaera sparsiforataTortonian
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Pontosphaera araiosChattian - Messinian
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Pontosphaera desuetaLatdorfian - Chattian
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Pontosphaera decorataSerravalian - Zanclean
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Pontosphaera japonicaAquitanian - Recent
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Fuettererella floraLate Albian
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Ceratolithus atlanticusTortonian - Zanclean
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Camuralithus pelliculatusChattian - Aquitanian
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Caracomia arcticaChattian - Recent
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Calcidiscus sp._BYpresian
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Calcidiscus sp._AYpresian
