Classification of Geyer 1954
G. †Acrosmilia d'Orbigny 1849
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†Acrosmilia depressa Etallon 1858
†Acrosmilia robusta Geyer 1954
G. †Axosmilia Milne-Edwards and Haime 1848
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†Axosmilia excavata Milaschewitsch 1876
†Axosmilia hemisphaerica Milaschewitsch 1876
†Axosmilia turbinata Münster 1829
G. Caryophyllia Lamarck 1801
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†Caryophyllia simplex Quenstedt 1881
†Caryophyllia suevica Quenstedt 1881
G. †Comophyllia d'Orbigny 1849
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†Comophyllia corrugata Milne-Edwards and Haime 1849
G. †Dimorphoseris Duncan 1872
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†Dimorphoseris affinis Becker 1875
†Dimorphoseris dubia Fromentel 1861
†Dimorphoseris helianthus Becker 1875
G. †Ellipsosmilia d'Orbigny 1849
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†Ellipsosmilia circumvelata Quenstedt 1852
†Ellipsosmilia rugosa Milaschewitsch 1876
G. †Microphyllia d'Orbigny 1849
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†Microphyllia astroides Goldfuss 1826
†Microphyllia brevivallis Becker 1875
†Microphyllia seriata Becker 1875
G. †Thamnasteria LeSauvage 1823
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†Thamnasteria heterogenea Becker 1875
†Thamnasteria microconos Goldfuss 1826
†Thamnasteria patina Becker 1875
†Thamnasteria pseudarachnoides Becker 1875
G. †Synastrea Milne-Edwards and Haime 1848
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†Synastrea foliacea Quenstedt 1852
†Synastrea multicincta Koby 1904