Taxonomy clear
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Helicosphaeroides waltransBurdigalian - Langhian
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Helicosphaera carteriChibanian - Meghalayan
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Helicosphaerella truncataLatdorfian - Langhian
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Helicosphaeroides ampliapertaBurdigalian - Langhian
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Helicosphaeroides scissurusAquitanian - Langhian
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Helicosphaeroides amazonicaAquitanian - Burdigalian
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Helicosphaerella wilcoxoniiPriabonian - Rupelian
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Helicosphaeroides dineseniiLutetian
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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
