Taxonomy clear
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Coronosphaera clathrataAquitanian - Latdorfian
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Coccolithus bowniiYpresian - Thanetian
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Coccolithus formosusLatdorfian - Danian
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Coccolithus anulatusLutetian - Thanetian
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Coccolithus crassiponsGelasian - Thanetian
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Coccolithus sarsiaeRecent - Danian
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Coccolithus paralitosZanclean - Ypresian
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Coccolithus occidentalisLutetian - Thanetian
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Helicosphaerella gartneriChattian - Latdorfian
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Helicosphaerella bramletteiRupelian - Priabonian
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Helicosphaeroides salebrosaBartonian - Lutetian
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Helicosphaeroides heezeniiLutetian
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Helicosphaera papillataLutetian - Ypresian
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Helicosphaera prolixaBartonian - Lutetian
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Helicosphaerella robinsoniaeRupelian - Priabonian
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Helicosphaeroides reticulataRupelian - Lutetian
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Helicosphaerella compactaRupelian - Lutetian
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Helicosphaerella clarissimaPriabonian - Lutetian
