Classification of Cooper 1956
G. †Ectenoglossa Sinclair 1945
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†Ectenoglossa lyelli Billings 1859
†Ectenoglossa nympha Billings 1865
G. †Elliptoglossa Cooper 1956
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†Elliptoglossa ovalis Bassler 1919
†Elliptoglossa rotundata Cooper 1956
†Elliptoglossa sylvanica Cooper 1956
G. †Lingulella Salter 1866
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†Lingulella brainerdi Raymond 1902
†Lingulella columba Raymond 1905
†Lingulella huronensis Billings 1859
†Lingulella morsensis Winchell 1880
†Lingulella narrawayi Wilson 1946
G. †Paterula Barrande 1879
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†Paterula polita Cooper 1956
†Paterula subcircularis Cooper 1956
G. †Westonia Walcott 1901
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†Westonia clathrata Walcott and Schuchert 1893
†Westonia superba Cooper 1956
G. †Conotreta Walcott 1889
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†Conotreta alta Cooper 1956
†Conotreta apicalis Cooper 1956
†Conotreta cuspidata Cooper 1956
†Conotreta gigantea Cooper 1956
†Conotreta magna Cooper 1956
†Conotreta plana Cooper 1956
G. †Schizambon Walcott 1884
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†Schizambon cuneatum Willard 1928
†Schizambon duplicimuratum Hudson 1905
G. †Atelelasma Cooper 1956
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†Atelelasma decorticatum Cooper 1956
†Atelelasma dorsoconvexum Cooper 1956
†Atelelasma multicosta Hudson 1905
G. †Chaulistomella Cooper 1956
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†Chaulistomella crassa Cooper 1956
†Chaulistomella rectangulata Cooper 1956
G. †Cyrtonotella Schuchert and Cooper 1931
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†Cyrtonotella grandistriata Cooper 1956
G. †Dalmanella Hall and Clarke 1892
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†Dalmanella costellata Cooper 1956
†Dalmanella sulcata Cooper 1956
G. †Dinorthis Hall and Clarke 1892
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†Dinorthis atavoides Willard 1928
†Dinorthis holdeni Willard 1928
†Dinorthis interstriata Willard 1928
†Dinorthis transversa Willard 1928
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Invalid names: Dinorthis quadriplicata Willard 1928 [synonym]
†Dinorthis venusta Cooper 1956
G. †Doleroides Cooper 1930
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†Doleroides ponderosus Cooper 1956
†Doleroides tennesseensis Cooper 1956
G. †Eremotoechia Cooper 1956
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†Eremotoechia alabamensis Cooper 1956
†Eremotoechia cloudi Cooper 1956
†Eremotoechia silicica Cooper 1956
G. †Glyptorthis Foerste 1914
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†Glyptorthis alta Cooper 1956
†Glyptorthis assimilis Cooper 1956
†Glyptorthis bellarugosa Conrad 1843
†Glyptorthis bellatula Cooper 1956
†Glyptorthis concinnula Cooper 1956
†Glyptorthis costellata Cooper 1956
†Glyptorthis crenulata Cooper 1956
†Glyptorthis equiconvexa Cooper 1956
†Glyptorthis glypta Cooper 1956
†Glyptorthis irregularis Cooper 1956
†Glyptorthis multicostellata Cooper 1956
†Glyptorthis obesa Cooper 1956
†Glyptorthis senecta Cooper 1956
†Glyptorthis subcircularis Cooper 1956
†Glyptorthis sulcata Cooper 1956
†Glyptorthis uncinata Cooper 1956
†Glyptorthis uniformis Cooper 1956
†Glyptorthis virginica Cooper 1956
G. †Hesperorthis Schuchert and Cooper 1931
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†Hesperorthis antelopensis Cooper 1956
†Hesperorthis australis Cooper 1956
†Hesperorthis costalis Hall 1847
†Hesperorthis decipiens Phleger, Jr. 1933
†Hesperorthis dubia Cooper 1956
†Hesperorthis ignicula Raymond 1905
†Hesperorthis matutina Cooper 1956
†Hesperorthis sulcata Cooper 1956
G. †Kullervo Opik 1932
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†Kullervo ornata Cooper 1956
†Kullervo parva Cooper 1956
†Kullervo sulcata Cooper 1956
G. †Laticrura Cooper 1956
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†Laticrura heteropleura Cooper 1956
†Laticrura magna Cooper 1956
†Laticrura pionodema Cooper 1956
G. †Mimella Cooper 1930
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†Mimella borealis Billings 1859
†Mimella globularis Cooper 1956
†Mimella imperator Billings 1859
†Mimella nucleoidea Cooper 1956
†Mimella vulgaris Raymond 1911
G. †Multicostella
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†Multicostella platys Billings 1859
†Multicostella plena Cooper 1956
†Multicostella rectangulata Cooper 1956
G. †Onychoplecia Cooper 1956
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†Onychoplecia brevirostris Cooper 1956
†Onychoplecia gracilis Raymond 1902
†Onychoplecia kindlei Cooper 1956
†Onychoplecia longirostris Billings 1859
†Onychoplecia matutina Cooper 1956
†Onychoplecia obesa Cooper 1956
†Onychoplecia tenuis Cooper 1956
G. †Orthambonites Pander 1830
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†Orthambonites acutiplicatus Raymond 1905
†Orthambonites bielsteini Cooper 1956
†Orthambonites dinorthoides Cooper 1956
†Orthambonites exfoliata Raymond 1905
†Orthambonites minusculus Phleger, Jr. 1933
†Orthambonites parvicrassicostatus Cooper 1956
†Orthambonites paucicostatus Ulrich and Cooper 1938
†Orthambonites tenuicostatus Cooper 1956
G. †Oxoplecia Wilson 1913
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†Oxoplecia abnormis Cooper 1956
†Oxoplecia costellata Cooper 1956
†Oxoplecia holstonensis Willard 1928
†Oxoplecia monitorensis Cooper 1956
†Oxoplecia multicostellata Cooper 1956
G. †Paucicrura Cooper 1956
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†Paucicrura rogata Sardeson 1892
†Paucicrura subplana Cooper 1956
G. †Paurorthis Schuchert and Cooper 1931
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†Paurorthis fasciculata Cooper 1956
†Paurorthis longa Cooper 1956
G. †Pionodema Foerste 1912
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†Pionodema minuscula Willard 1928
†Pionodema subaequata Conrad 1843
G. †Plectorthis Hall and Clarke 1892
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†Plectorthis australis Cooper 1956
†Plectorthis mazourkaensis Phleger, Jr. 1933
†Plectorthis obesa Cooper 1956
†Plectorthis ponderosa Cooper 1956
G. †Ptychopleurella Schuchert and Cooper 1931
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†Ptychopleurella lamellosa Raymond 1905
†Ptychopleurella mediocostata Cooper 1956
†Ptychopleurella oklahomensis Cooper 1956
†Ptychopleurella porcia Billings 1859
†Ptychopleurella rectangulata Cooper 1956
†Ptychopleurella sulcata Cooper 1956
G. †Scaphorthis Cooper 1956
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†Scaphorthis perplexa Cooper 1956
†Scaphorthis virginiensis Cooper 1956
G. †Skenidioides Schuchert and Cooper 1931
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†Skenidioides costatus Cooper 1956
†Skenidioides oklahomensis Cooper 1956
G. †Triplesia Hall 1859
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†Triplesia carinata Cooper 1956
†Triplesia subcarinata Cooper 1956
G. †Tritoechia Ulrich and Cooper 1936
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†Tritoechia typica Schuchert and Cooper 1932
G. †Valcourea Raymond 1911
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†Valcourea angulata Phleger, Jr. 1933
†Valcourea plana Cooper 1956
†Valcourea semicarinata Cooper 1956
†Valcourea strophomenoides Raymond 1905
†Valcourea transversa Cooper 1956
G. †Bellimurina Cooper 1956
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†Bellimurina charlottae Winchell and Schuchert 1892
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Invalid names: Bellimurina halli Sardeson 1892 [synonym]
†Bellimurina compressa Cooper 1956
†Bellimurina concentrica Cooper 1956
†Bellimurina subquadrata Cooper 1956
†Bellimurina sulcata Cooper 1956
G. †Bimuria Ulrich and Cooper 1942
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†Bimuria buttsi Cooper 1956
†Bimuria immatura Cooper 1956
†Bimuria parvula Cooper 1956
G. †Dactylogonia Ulrich and Cooper 1942
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†Dactylogonia alternata Cooper 1956
†Dactylogonia extensa Cooper 1956
†Dactylogonia geniculata Ulrich and Cooper 1942
†Dactylogonia incrassata Hall 1847
†Dactylogonia obsoleta Butts 1926
†Dactylogonia palustris Willard 1928
G. †Furcitella Cooper 1956
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†Furcitella plicata Cooper 1956
†Furcitella scofieldi Winchell and Schuchert 1892
G. †Glyptomena Cooper 1956
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†Glyptomena distans Raymond 1906
†Glyptomena prisca Raymond 1905
†Glyptomena sculpturata Cooper 1956
G. †Ingria Öpik 1930
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†Ingria cloudi Ulrich and Cooper 1936
Invalid names: Palinorthis Ulrich and Cooper 1936 [synonym]
G. †Isophragma Cooper 1956
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†Isophragma extensum Cooper 1956
†Isophragma ponderosum Cooper 1956
†Isophragma subabbreviatum Cooper 1956
G. †Leptellina Ulrich and Cooper 1936
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†Leptellina pulchra Cooper 1956
†Leptellina tennesseensis Ulrich and Cooper 1936
†Leptellina transversa Cooper 1956
G. †Macrocoelia
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†Macrocoelia champlainensis Raymond 1902
†Macrocoelia elegantula Cooper 1956
†Macrocoelia magna Butts 1942
†Macrocoelia obesa Cooper 1956
†Macrocoelia rotunda Cooper 1956
†Macrocoelia ruedemanni Salmon 1942
G. †Murinella Cooper 1956
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†Murinella biconvexa Cooper 1956
†Murinella muralis Cooper 1956
G. †Palaeostrophomena Holtedahl 1916
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†Palaeostrophomena angulata Cooper 1956
†Palaeostrophomena subtransversa Cooper 1956
†Palaeostrophomena superba Cooper 1956
G. †Ptychoglyptus Willard 1928
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†Ptychoglyptus virginiensis Willard 1928
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Invalid names: Ptychoglyptus pulchrus Butts 1926 [synonym]
G. †Rafinesquina Hall and Clarke 1892
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†Rafinesquina planulata Cooper 1956
†Rafinesquina trentonensis Hall 1847
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Invalid names: Rafinesquina alternata Conrad 1838 [replaced]
G. †Sowerbyella Jones 1928
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†Sowerbyella bellarugosa Ulrich and Cooper 1938
†Sowerbyella curdsvillensis Foerste 1912
†Sowerbyella lebanonensis Bassler 1932
†Sowerbyella merriami Cooper 1956
†Sowerbyella monilifera Cooper 1956
†Sowerbyella perplexa Cooper 1956
†Sowerbyella punctostriata Mather 1917
†Sowerbyella silicica Cooper 1956
†Sowerbyella socialis Cooper 1956
†Sowerbyella varicostellata Cooper 1956
G. †Sowerbyites Teichert 1937
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†Sowerbyites delicatus Cooper 1956
†Sowerbyites gildersleevei Cooper 1956
†Sowerbyites hami Cooper 1956
†Sowerbyites lamellosus Cooper 1956
†Sowerbyites subnasutus Cooper 1956
G. †Strophomena Rafinesque and De Blainville 1824
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†Strophomena costellata Cooper 1956
†Strophomena dignata Fenton 1928
†Strophomena filitexta Hall 1847
†Strophomena incurvata Shephard 1838
†Strophomena inspeciosa Willard 1928
†Strophomena musculosa Fenton 1928
†Strophomena planobesa Cooper 1956
†Strophomena plattinensis Fenton 1928
†Strophomena septata Winchell and Schuchert 1892
G. †Camerella Billings 1859
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†Camerella immatura Cooper 1956
†Camerella minuta Cooper 1956
†Camerella nuda Cooper 1956
†Camerella varians Billings 1859
†Camerella ventricosa Cooper 1956
G. †Ancistrorhyncha Ulrich and Cooper 1942
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†Ancistrorhyncha costata Ulrich and Cooper 1942
G. †Rostricellula Ulrich and Cooper 1942
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†Rostricellula basalaris Cooper 1956
†Rostricellula major Raymond 1905
†Rostricellula minnesotensis Sardeson 1892
†Rostricellula minuta Cooper 1956
†Rostricellula orientalis Billings 1859
†Rostricellula plena Hall 1847
†Rostricellula pristina Raymond 1905
†Rostricellula raymondi Cooper 1956
G. †Sphenotreta
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†Sphenotreta acutirostris Hall 1847
†Sphenotreta sulcata Cooper 1956
G. †Protozyga Hall and Clarke 1893
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†Protozyga costata Cooper 1956
†Protozyga elongata Cooper 1956
†Protozyga exigua Hall 1847
†Protozyga magnicostata Cooper 1956
†Protozyga nicolleti Winchell and Schuchert 1892
†Protozyga rotunda Cooper 1956
G. †Zygospira Hall 1862
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†Zygospira lebanonensis Cooper 1956
†Zygospira matutina Cooper 1956
†Zygospira recurvirostris Hall 1847
Subfm. †Leptellininae Ulrich and Cooper 1936
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G. †Bilobia Cooper 1956
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†Bilobia hemisphaerica Cooper 1956
†Bilobia pisum Ruedemann 1901
†Bilobia virginiensis Cooper 1956
Fm. †Leptellinidae Ulrich and Cooper 1936
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Invalid names: Leptelloidinae Cooper 1956 [empty]
Fm. †Dalmanellidae Schuchert 1913
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Fm. †Strophomenidae King 1846
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G. †Rhipidomena Cooper 1956
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†Rhipidomena fillocostellata Cooper 1956
†Rhipidomena mesleri Cooper 1956
†Rhipidomena subparallela Cooper 1956
†Rhipidomena tennesseensis Willard 1928
†Rhipidomena tenuitesta Willard 1928
Subfm. †Glossellinae Cooper 1956
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Fm. †Bimuriidae Cooper 1956
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Fm. †Trimerellidae Davidson and King 1872
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Fm. †Leptaenidae Hall and Clarke 1894
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Fm. †Oligorhynchiidae Cooper 1956
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G. †Opikina Salmon 1942
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†Opikina expatiata Cooper 1956
†Opikina extensa Cooper 1956
†Opikina glabella Cooper 1956
†Opikina matutina Cooper 1956
†Opikina nasuta Cooper 1956
†Opikina parvula Cooper 1956
†Opikina speciosa Cooper 1956
†Opikina varia Cooper 1956
Subfm. †Schizophoriinae Schuchert
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