Classification of Clapp and Shimer 1911
G. †Calamophyllia Blainville 1830
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†Calamophyllia dawsoni Clapp and Shimer 1911
†Calamophyllia suttonensis Clapp and Shimer 1911
G. †Isastrea Milne-Edwards and Haime 1851
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†Isastrea vancouverensis Clapp and Shimer 1911
†Isastrea whiteavesi Clapp and Shimer 1911