Classification of Northrop 1939
G. †Clathrodictyon Nicholson and Murie 1878
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†Clathrodictyon crickmayi Parks 1933
G. †Stromatoporella Nicholson 1886
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†Stromatoporella chouinardensis Parks 1933
†Stromatoporella crassa Parks 1933
†Stromatoporella prima Parks 1933
G. †Syringopora Goldfuss 1826
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†Syringopora bifurcata Lonsdale 1839
†Syringopora compacta Billings 1858
†Syringopora retiformis Billings 1858
Or. †Rugosa Milne-Edwards and Haime 1850 [horn coral]
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G. †Palaeocyclus Milne-Edwards and Haime 1849
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†Palaeocyclus rotuloides Hall 1852
G. †Cyrtolites Conrad 1838
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†Cyrtolites clemvillensis Northrop 1939
†Cyrtolites insculptus Northrop 1939
†Cyrtolites pharetra Lindström 1884
G. †Salpingostoma Roemer 1876
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†Salpingostoma dilatatum de Sowerby and Murchison 1839
†Salpingostoma inornatum Northrop 1939
†Salpingostoma orientalis Twenhofel 1928
G. †Tremanotus Hall 1868
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†Tremanotus longitudinalis Lindström 1884
†Tremanotus minutus Northrop 1939
G. †Euomphalopterus Roemer 1876
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†Euomphalopterus aequilaterus Wahlenberg 1821
†Euomphalopterus alatus Wahlenberg 1821
†Euomphalopterus elora Billings 1865
†Euomphalopterus gasconsensis Northrop 1939
†Euomphalopterus halei Hall 1867
†Euomphalopterus valeria Billings 1865
G. †Poleumita Clarke and Ruedemann 1903
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†Poleumita chaleurensis Northrop 1939
†Poleumita crenulata Whiteaves 1884
†Poleumita discors Sowerby 1814
†Poleumita macrolineata Whitfield 1878
G. †Pleurotomaria Defrance 1826
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†Pleurotomaria axion Hall 1868
†Pleurotomaria putillus Northrop 1939
†Pleurotomaria subundata Northrop 1939
G. †Prosolarium Perner 1903
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†Prosolarium cirrhosum Lindström 1884
†Prosolarium dominus Perner 1903
†Prosolarium platybasis Northrop 1939
†Prosolarium scalatum Northrop 1939
Subfm. †Stropheodontinae Caster 1939
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