Classification of the family Zaphrentidae

Fm. †Zaphrentidae Milne-Edwards and Haime 1850
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G. †Aemulophyllum Oliver 1958
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†Aemulophyllum exiguum Billings 1860
G. †Cyathocylindrium Oliver 1974
G. †Heliophylloides Stumm 1949
G. †Heliophyllum Hall 1846
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†Heliophyllum halli Edwards and Haime 1851
†Heliophyllum reflexum Hall 1876
†Heliophyllum solidum Hall and Whitfield 1873
Invalid names: Heliogonium Chapman 1893 [synonym]
G. †Keriophyllum Wedekind 1923
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Invalid names: Ceriophyllum Lang et al. [synonym]
G. †Phymatophyllum Stumm 1965
G. †Zaphrenthis Rafinesque and Clifford 1820
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Invalid names: Helenterophyllum Grabau 1910 [synonym], Heliophrentis Grabau 1910 [synonym], Zaphrentis Haime 1850 [synonym]