Classification of Williams 1962
G. †Lingulella Salter 1866
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†Lingulella amabilis Reed 1917
†Lingulella angustior Reed 1917
†Lingulella quaestor Reed 1917
G. †Conotreta Walcott 1889
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†Conotreta conoidea Reed 1917
†Conotreta davidsoni Reed 1917
G. †Cyrtonotella Schuchert and Cooper 1931
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†Cyrtonotella nicholsoni Reed 1917
†Cyrtonotella subfissicostata Reed 1917
G. †Dalmanella Hall and Clarke 1892
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†Dalmanella cheesemani Williams 1962
†Dalmanella federata Reed 1917
G. †Dolerorthis Schuchert and Cooper 1931
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†Dolerorthis duftonensis Reed 1910
†Dolerorthis rankini Davidson 1883
G. †Glyptorthis Foerste 1914
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†Glyptorthis balclatchiensis Davidson 1883
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Invalid names: Glyptorthis lapworthi Davidson 1883 [synonym]
G. †Laticrura Cooper 1956
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†Laticrura inconstans Reed 1917
†Laticrura pionodema Cooper 1956
G. †Orthambonites Pander 1830
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†Orthambonites ardmillanensis Reed 1917
†Orthambonites parvicrassicostatus Cooper 1956
†Orthambonites playfairi Reed 1917
†Orthambonites subplicatellus Reed 1917
†Orthambonites tenuicostatus Cooper 1956
G. †Oxoplecia Wilson 1913
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†Oxoplecia andersoni Reed 1917
†Oxoplecia subborealis Davidson 1883
G. †Paucicrura Cooper 1956
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†Paucicrura eximia Williams 1962
†Paucicrura sila Williams 1962
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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G. †Plectorthis Hall and Clarke 1892
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†Plectorthis australis Cooper 1956
†Plectorthis scotica McCoy 1852
G. †Taphrorthis Cooper 1956
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†Taphrorthis aspera Williams 1962
†Taphrorthis bellatrix Reed 1917
†Taphrorthis peculiaris Cooper 1956
G. †Bilobia Cooper 1956
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G. †Christiania Hall and Clarke 1892
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†Christiania bilobata Reed 1917
†Christiania perrugata Reed 1945
†Christiania sulcata Williams 1962
G. †Craspedelia Cooper 1956
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†Craspedelia gabata Williams 1962
†Craspedelia marginata Cooper 1956
G. †Cyphomena Cooper 1956
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G. †Dactylogonia Ulrich and Cooper 1942
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†Dactylogonia multicorrugata Reed 1917
†Dactylogonia semiglobosina Davidson 1870
G. †Diambonia Cooper and Kindle 1936
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†Diambonia anatoli Spjeldnaes 1957
†Diambonia discuneata Lamont 1935
G. †Glyptomena Cooper 1956
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†Glyptomena brumalis Reed 1917
†Glyptomena girvanensis Salmon 1942
†Glyptomena trippi Williams 1962
Invalid names: Oslomena Spjeldnaes 1957 [synonym]
G. †Leptaena Dalman 1828
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†Leptaena diademata Williams 1962
†Leptaena infrunita Williams 1962
†Leptaena ordovicica Cooper 1956
†Leptaena strandi Spjeldnaes 1957
G. †Leptellina Ulrich and Cooper 1936
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†Leptellina llandeiloensis Davidson 1883
†Leptellina rhacta Williams 1962
†Leptellina semilunata Williams 1962
G. †Macrocoelia
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†Macrocoelia concentrica Portlock 1843
†Macrocoelia macallumi Reed 1917
G. †Mjoesina Spjeldnaes 1957
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G. †Palaeostrophomena Holtedahl 1916
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†Palaeostrophomena angulata Cooper 1956
†Palaeostrophomena kilbuchoensis Davidson 1883
†Palaeostrophomena subfilosa Reed 1917
G. †Ptychoglyptus Willard 1928
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†Ptychoglyptus valdari Spjeldnaes 1957
†Ptychoglyptus virginiensis Willard 1928
G. †Rafinesquina Hall and Clarke 1892
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†Rafinesquina insidiosa Williams 1962
†Rafinesquina planulata Cooper 1956
G. †Sowerbyella Jones 1928
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†Sowerbyella elusa Williams 1962
†Sowerbyella varicostellata Cooper 1956
G. †Strophomena Rafinesque and De Blainville 1824
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†Strophomena deficiens Reed 1917
G. †Xenambonites Cooper 1956
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†Xenambonites revelatus Williams 1962
†Xenambonites undosus Cooper 1956
G. †Camerella Billings 1859
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†Camerella minuta Cooper 1956
†Camerella peachi Davidson 1883
G. †Parastrophina Schuchert and LeVene 1929
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†Parastrophina anceps Reed 1944
†Parastrophina balclatchiensis Davidson 1883
†Parastrophina scotica Davidson 1883
G. †Parastrophinella Schuchert and Cooper 1931
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†Parastrophinella thraivensis Reed 1917
†Parastrophinella youngi Reed 1917
G. †Oligorhynchia Cooper 1956
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†Oligorhynchia bifurcata Cooper 1956
†Oligorhynchia conybearei Reed 1917
G. †Rostricellula Ulrich and Cooper 1942
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†Rostricellula ardmillanensis Reed 1917
†Rostricellula lapworthi Davidson 1883
G. †Cyclospira Hall and Clarke 1893
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†Cyclospira carrickensis Reed 1917
†Cyclospira longa Cooper 1956
G. †Idiospira
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†Idiospira cuneatella Davidson 1883
†Idiospira thomsoni Davidson 1868
G. †Protozyga Hall and Clarke 1893
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†Protozyga diversa Reed 1917
†Protozyga perplexa Williams 1962
†Protozyga rotunda Cooper 1956
Fm. †Orthotetidae Waagen 1884
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Superfm. †Spiriferacea King 1846
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Invalid names: Aulidospiridae Williams 1962 [empty]
Fm. †Triplesiidae Schuchert 1913
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Fm. †Orthorhynchulidae Cooper 1956
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†Hesperorthis australis Cooper 1956
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†Hesperorthis australis exitis Williams 1962
†Ptychopleurella rectangulata Cooper 1956
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†Ptychopleurella rectangulata laciniata Williams 1962
Subfm. †Leptelloidinae Cooper 1956
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†Sericoidea restricta Hadding 1913
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Invalid names: Sericoidea craigensis Reed 1917 [synonym]
Fm. †Brevicameridae Cooper 1956
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