Classification of Hall and Clarke 1892

G. †Dalmanella Hall and Clarke 1892
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Dalmanella subaequata Conrad 1843
G. †Orthis Dalman 1828
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Orthis swallovi Hall 1858
G. †Plaesiomys Hall and Clarke 1892
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Plaesiomys iphigenia Billings 1865
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Rhipidomella oblata Hall 1857
G. †Amphistrophia Hall and Clarke 1892
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Amphistrophia striata Hall 1843
G. †Chonetes Fischer de Waldheim 1830
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Chonetes lineata Conrad 1839
G. †Leptaenisca Beecher 1890
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Leptaenisca concava Hall 1857
G. †Leptostrophia Hall and Clarke 1892
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Leptostrophia becki Hall 1857
G. †Rafinesquina Hall and Clarke 1892
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Rafinesquina minnesotensis Winchell 1881
Rafinesquina unicostata Meek and Worthen 1868
G. †Strophodonta Hall 1852
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Strophodonta variabilis Calvin 1878
G. †Strophomena Rafinesque and De Blainville 1824
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Strophomena winchelli Hall and Clarke 1892
G. †Conchidium Oehlert 1887
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Conchidium decussatum Whiteaves 1891
G. †Stropheodonta Hall 1852
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Stropheodonta corrugata Conrad 1842
G. †Bilobites Quenstedt 1869
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Bilobites varicus Conrad 1842
Subg. †Orthis (Schizophoria) King 1850
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Orthis (Schizophoria) iowensis Hall and Clarke 1892
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Orthothetes chemungensis Conrad 1842
Orthothetes prava Hall 1858
Leptaena rhomboidalis Wahlenberg 1818
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Pentamerus oblongus de Sowerby 1839
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Pentamerus oblongus subrectus Hall and Clarke 1892
G. †Pholidops Hall 1859
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Pholidops subtruncata Hall 1847