Taxonomy clear
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Helicosphaeroides amazonicaBurdigalian - Aquitanian
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Helicosphaerella wilcoxoniiRupelian - Priabonian
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Helicosphaeroides dineseniiLutetian
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Helicosphaerella theodoridisiiSerravalian - Latdorfian
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Helicosphaerella obliquaSerravalian - Latdorfian
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Helicosphaeroides watkinsiiBurdigalian - Aquitanian
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Helicosphaeranudus walbersdorfensisMessinian - Serravalian
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Helicosphaera leesiaeBurdigalian - Latdorfian
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Helicosphaeroides magnificaLanghian - Aquitanian
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Girgisia gammationLutetian - Ypresian
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Pontosphaera sparsiforataTortonian
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Discolithina araiosMessinian - Chattian
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Discolithina desuetaChattian - Latdorfian
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Discolithina decorataChibanian - Aquitanian
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Discolithina japonicaRecent - Aquitanian
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Fuettererella floraLate Albian
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Ceratolithus atlanticusZanclean - Tortonian
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Camuralithus pelliculatusAquitanian - Chattian
