Classification of Turnsek et al. 2003

G. †Axosmilia Milne-Edwards and Haime 1848
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†Axosmilia whitneyi Wells 1933
G. †Columastrea d'Orbigny 1849
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†Columastrea wintoni Wells 1933
G. †Rennensismilia Alloiteau 1952
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G. Sphenotrochus Milne-Edwards and Haime 1848
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†Sphenotrochus straini Turnsek et al. 2003
Cl. Gastropoda Cuvier 1795 [snail]
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Fm. Turritellidae Lovén 1847 [turret shell]
Fm. Caryophylliidae Gray 1847
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G. †Paratrochocyathus Alloiteau 1958
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†Paratrochocyathus conulus Phillips 1829
Fm. Meandrinidae Gray 1847
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G. †Parasmiliopsis Alloiteau 1957
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†Parasmiliopsis cenomana Fromentel 1863
G. Coelosmilia Milne-Edwards and Haime 1850
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†Coelosmilia texana Conrad 1857