Classification of Foerste 1924
G. †Tetradium Dana 1846
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G. †Streptelasma Hall 1847
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†Streptelasma divaricans Nicholson 1875
†Streptelasma rusticum Billings 1858
G. †Vallatotheca Foerste 1914
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†Vallatotheca manitoulinensis Foerste 1914
†Vallatotheca ungiformis Ulrich and Scofield 1897
G. †Cyrtolites Conrad 1838
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†Cyrtolites carinatus Miller 1874
†Cyrtolites ornatus Conrad 1838
†Cyrtolites parvus Ulrich and Scofield 1897
G. †Technophorus Miller 1889
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†Technophorus divaricatus Ulrich 1892
†Technophorus punctostriatus Ulrich 1893
†Technophorus quincuncialis Foerste 1914
G. †Conocardium Bronn 1835
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†Conocardium beecheri Raymond 1905
†Conocardium elegantulum Billings 1866
†Conocardium richmondense Foerste 1910
G. †Bellerophon de Montfort 1808
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†Bellerophon mohri Miller 1874
†Bellerophon parksi Foerste 1924
G. †Pterotheca Salter 1853
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†Pterotheca anatiformis Hall 1847
†Pterotheca angusta Raymond 1921
†Pterotheca avirostris Huxley and Etheridge 1865
†Pterotheca clochensis Foerste 1924
†Pterotheca expansa Emmons 1842
†Pterotheca harviei Foerste 1924
†Pterotheca mullochensis Reed 1909
†Pterotheca pentagona Foerste 1914
†Pterotheca saffordi Hall 1861
†Pterotheca transversa Portlock 1843
†Pterotheca undulata Hall 1861
G. †Salpingostoma Roemer 1876
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†Salpingostoma lata Foerste 1924
†Salpingostoma richmondensis Ulrich and Scofield 1897
G. †Archinacella Ulrich and Scofield 1897
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†Archinacella indianensis Miller 1892
†Archinacella kagawongensis Foerste 1924
†Archinacella laevis Foerste 1924
†Archinacella pulaskiensis Foerste 1914
†Archinacella richmondensis Ulrich and Scofield 1897
G. †Eotomaria Ulrich and Scofield 1897
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†Eotomaria canalifera Ulrich and Scofield 1897
†Eotomaria remotistriata Foerste 1924
G. †Helicotoma Salter 1859
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†Helicotoma brocki Foerste 1912
†Helicotoma planulata Salter 1859
†Helicotoma planulatoides Ulrich and Scofield 1897
G. †Liospira Ulrich and Scofield 1897
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†Liospira helena Billings 1860
†Liospira micula Hall and Whitney 1862
G. †Lophospira Whitfield 1886
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†Lophospira beatrice Foerste 1914
†Lophospira belli Foerste 1924
†Lophospira bowdeni Safford 1869
†Lophospira hyacinthensis Foerste 1924
†Lophospira kindlei Foerste 1924
†Lophospira laticarinata Foerste 1924
†Lophospira manitouliensis Foerste 1924
†Lophospira manitoulinensis Foerste 1924
†Lophospira obliqua Ulrich and Scofield 1897
†Lophospira robusta Lindström 1884
†Lophospira sumnerensis Safford 1869
†Lophospira tropidophora Meek 1873
G. †Sactoceras Hyatt 1884
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†Sactoceras manitoulinense Foerste 1924
†Sactoceras piso Billings 1865
†Sactoceras westonense Foerste 1924
G. †Kindleoceras Foerste 1924
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†Kindleoceras reversatum Foerste 1924
†Kindleoceras triangulare Foerste 1924
G. †Manitoulinoceras Foerste 1924
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†Manitoulinoceras lysander Billings 1865
†Manitoulinoceras postumius Billings 1865
G. †Ctenodonta Salter 1852
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†Ctenodonta borealis Foerste 1914
†Ctenodonta chambliensis Foerste 1924
†Ctenodonta hyacinthensis Foerste 1924
†Ctenodonta lorrainensis Foerste 1914
†Ctenodonta pectunculoides Hall 1872
G. †Cyrtodonta Billings 1858
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†Cyrtodonta exigua Foerste 1924
†Cyrtodonta kagawongensis Foerste 1924
†Cyrtodonta ovalis Foerste 1924
G. †Orthodesma Hall and Whitfield 1875
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†Orthodesma nasutum Hall 1847
†Orthodesma postplicatum Foerste 1914
G. †Byssonychia Ulrich 1893
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†Byssonychia borealis Foerste 1924
†Byssonychia radiata Hall 1847
G. †Cymatonota Ulrich 1893
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†Cymatonota parallela Hall 1847
†Cymatonota pholadis Hall 1847
G. †Ischyrodonta Ulrich 1890
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†Ischyrodonta curta Conrad 1841
†Ischyrodonta manitoulinensis Foerste 1924
G. †Lyrodesma Conrad 1841
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†Lyrodesma huguesensis Foerste 1924
†Lyrodesma major Ulrich 1879
†Lyrodesma postplanum Foerste 1924
G. †Modiolopsis Hall 1847
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†Modiolopsis hyacinthensis Foerste 1924
†Modiolopsis manitoulinensis Foerste 1924
†Modiolopsis meafordensis Foerste 1924
†Modiolopsis vera Foerste 1924
G. †Strophomena Rafinesque and De Blainville 1824
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†Strophomena fluctuosa Billings 1860
G. †Rhynchotrema Hall 1860
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†Rhynchotrema capax Conrad 1842
†Rhynchotrema pulchellum Foerste 1924
†Rhynchotrema tamarackensis Foerste 1924
G. †Zygospira Hall 1862
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†Zygospira kentuckiensis Hall and Clarke 1895
†Zygospira meafordensis Foerste 1924
†Zygospira modesta Hall 1847
G. †Oxydiscus Koken 1889
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†Oxydiscus magnus Miller 1878
†Oxydiscus perstriatus Foerste 1924
†Oxydiscus subacutus Ulrich and Scofield 1897
G. †Whitella Ulrich 1890
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†Whitella hindi Billings 1865
†Whitella huguesensis Foerste 1924
†Hormotoma gracilis Hall 1847
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†Hormotoma gracilis angustatus Hall 1847
†Hormotoma gracilis sublaxa Ulrich and Scofield 1897
G. †Girvanella Nicholson and Etheridge 1878
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†Girvanella richmondensis Miller 1882
G. †Clidophorus Hall 1862
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†Clidophorus brevi Foerste 1924
†Clidophorus postvolutus Foerste 1924
†Clidophorus tamarackensis Foerste 1924
†Columnaria calicina Nicholson 1874
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Invalid names: Columnaria herzeri Rominger 1876 [synonym]
†Ischyrodonta unionoides Meek 1893
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†Ischyrodonta unionoides westonensis Foerste 1924
†Modiolopsis concentrica Hall and Whitfield 1875
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†Modiolopsis concentrica chambliensis Foerste 1924
†Orthodesma canaliculatum Ulrich 1894
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†Orthodesma canaliculatum consimilis Foerste 1924