Taxonomy clear
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Helicosphaera kilidaChibanian
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Helicosphaera pterigaChibanian
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Helicosphaera carteri treisporoiTortonian - Recent
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Helicosphaera carteri rotundusBurdigalian - Recent
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Helicosphaera kamptneriBurdigalian - Recent
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Helicosphaera epimikeisporousSerravalian - Recent
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Pontosphaera lepidaZanclean - Tarantian
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Pontosphaera jonesiiMessinian - Tarantian
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Pontosphaera wondersiiDanian
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Umbellosphaera tenuisZanclean - Recent
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Tintinnabuliformis bicornusSerravalian - Zanclean
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Tintinnabuliformis unicornSerravalian - Calabrian
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Scampanella wiseiDanian - Thanetian
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Rigaudia multiradiataZanclean - Recent
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Micrascidites vulgarisThanetian - Recent
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Bonetia brevisLanghian - Recent
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Bonetia acutaLanghian - Recent
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Monniotia aciformisZanclean - Recent
