Taxonomy clear
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Neochiastozygus kallanxhiaeThanetian
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Neochiastozygus gammationThanetian
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Neochiastozygus dyomisaThanetian
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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 - Meghalayan
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Pontosphaera apocresisAquitanian - Meghalayan
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Pontosphaera callosaSerravalian - Meghalayan
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Pontosphaera desuetoideaLanghian - Tortonian
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Pontosphaera geminiporaLanghian - Serravalian
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Pontosphaera payneiCalabrian - Meghalayan
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Transversopontis rimosusThanetian - Lutetian
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Pontosphaera rorsaZanclean - Meghalayan
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Pontosphaera versaThanetian - Lutetian
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Pontosphaera trenaAquitanian - Meghalayan
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Rotelapillus tesserisbaresEarly Turonian - Early Coniacian
