Taxonomy clear
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Coccolithus formosusLatdorfian - Danian
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Coccolithus sarsiaeRecent - Danian
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Helicosphaerella bramletteiRupelian - Priabonian
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Helicosphaerella compactaRupelian - Lutetian
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Helicosphaerella pacificaTortonian
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Helicosphaeranudus hyalinaRecent - Serravalian
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Sphenolithus preasiiLanghian - Burdigalian
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Triamutilaferrum martiniiSerravalian - Aquitanian
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Orthorhabdus serratusSerravalian - Aquitanian
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Nicklithus amplificusMessinian
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Minylitha cancellataTortonian
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Minylitha convallisTortonian
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Ilselithina fusaAquitanian - Chattian
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Helicosphaeroides girgisiiTortonian - Serravalian
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Helicosphaera selliiCalabrian - Messinian
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Helicosphaerella rectaBurdigalian - Latdorfian
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Helicosphaerella orientalisTortonian - Serravalian
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Helicosphaerella philippinensisTortonian - Langhian
