Taxonomy clear
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Neochiastozygus distentusSelandian - Ypresian
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Neochiastozygus concinnusDanian - Ypresian
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Neochiastozygus chiastusThanetian - Ypresian
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Neochiastozygus alabamaensisDanian
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Pontosphaera discoporaLanghian - Recent
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Pontosphaera apocresisAquitanian - Recent
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Pontosphaera callosaSerravalian - Recent
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Pontosphaera desuetoideaLanghian - Tortonian
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Pontosphaera geminiporaLanghian - Serravalian
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Pontosphaera payneiCalabrian - Recent
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Pontosphaera rimosaThanetian - Lutetian
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Pontosphaera rorsaZanclean - Recent
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Pontosphaera versaThanetian - Lutetian
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Pontosphaera trenaAquitanian - Recent
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Rotelapillus tesserisbaresEarly Turonian - Early Coniacian
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Davidhakania saepesDanian - Selandian
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Davidhakania partingtoniiDanian
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Davidhakania imbrieiDanian
