Classification of Nassichuk 1975
G. †Bilinguites Librovitch 1946
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†Bilinguites canadensis Nassichuk 1975
†Bilinguites heibergensis Nassichuk 1975
G. †Bisatoceras Miller and Owen 1937
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†Bisatoceras akiyoshiense Nishida 1971
†Bisatoceras greenei Miller and Owen 1939
†Bisatoceras hoeni Nassichuk 1975
†Bisatoceras kotti Nassichuk 1975
†Bisatoceras micromphalus McCaleb 1968
†Bisatoceras nevadense Gordon 1969
†Bisatoceras primum Miller and Owen 1937
†Bisatoceras renni Nassichuk 1975
†Bisatoceras secundum Miller and Moore 1938
†Bisatoceras solominae Popow 1970
G. †Branneroceras Plummer and Scott 1937
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†Branneroceras branneri Smith 1896
†Branneroceras hillsi Nassichuk 1975
†Branneroceras nicholasi Nassichuk 1975
G. †Christioceras Nassichuk and Furnish 1965
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†Christioceras domokhotovi Popow 1970
G. †Diaboloceras Miller and Furnish 1940
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†Diaboloceras involutum Nassichuk 1975
†Diaboloceras neumeieri Quinn and Carr 1963
G. †Gastrioceras Hyatt 1884
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†Gastrioceras glenisteri Nassichuk 1975
†Gastrioceras liratum Nassichuk 1975
†Gastrioceras melvillensis Nassichuk 1975
G. †Gonioloboceratoides Nassichuk 1975
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†Gonioloboceratoides curvatus Nassichuk 1975
†Gonioloboceratoides eliasi Miller and Owen 1939
G. †Neodimorphoceras Schmidt 1925
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†Neodimorphoceras lenticulare Girty 1911
†Neodimorphoceras oklahomae Girty 1911
†Neodimorphoceras sverdrupi Nassichuk 1975
†Neodimorphoceras texanum Smith 1903
G. †Neoglaphyrites Ruzhencev 1938
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†Neoglaphyrites bashkiricus Ruzhentsev 1938
†Neoglaphyrites bisulcatus Nassichuk 1975
†Neoglaphyrites ellipsoidale Ruzhentsev and Bogoslovskaya 1971
G. †Neoicoceras Hyatt 1900
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†Neoicoceras elkhornense Miller and Gurley 1896
†Neoicoceras martini Nassichuk 1975
†Neoicoceras walkeri Webster and Lane 1967
G. †Parashumardites Ruzhencev 1939
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†Parashumardites fornicatus Plummer and Scott 1937
†Parashumardites sellardsi Plummer and Scott 1937
†Parashumardites senex Miller and Cline 1934
G. †Phaneroceras Plummer and Scott 1937
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†Phaneroceras amotapense Thomas 1928
†Phaneroceras compressum Hyatt 1891
†Phaneroceras kesslerense Mather 1915
†Phaneroceras lenaense Andrianov 1966
†Phaneroceras lenticulare Plummer and Scott 1937
G. †Proshumardites Rauser-Tschernoussowa 1928
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†Proshumardites aequalis Nassichuk 1975
†Proshumardites delepinei Schindewolf 1939
†Proshumardites karpinskii Rauser-Chernousova 1928
†Proshumardites morrowanus Gordon 1964
†Proshumardites primus Plummer and Scott 1937
†Proshumardites principalis Ruzhentsev and Bogoslovskaya 1971
G. †Somoholites Ruzhencev 1938
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†Somoholites bamberi Nassichuk 1975
†Somoholites merriami Miller and Furnish 1940
G. †Syngastrioceras Librovitch 1938
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†Syngastrioceras aktubense Ruzhentsev and Bogoslovskaya 1971
†Syngastrioceras cadiconiformis Wagner-Gentis 1963
†Syngastrioceras constrictum Nassichuk 1975
†Syngastrioceras globosum Easton 1943
†Syngastrioceras oblatum Miller and Moore 1938
†Syngastrioceras orientale Yin 1935
†Syngastrioceras sholakensis Ruzhentsev and Bogoslovskaya 1971
†Syngastrioceras suborientale Yin 1935
†Syngastrioceras ukrainicus Librovitch 1939
G. †Boesites Miller and Furnish 1940
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†Boesites eotexanus Wagner-Gentis 1971
†Boesites girtyi Plummer and Scott 1937
†Boesites gracilis Nassichuk 1975
†Boesites primoris Ruzhentsev 1950
†Boesites scotti Miller and Furnish 1940
†Boesites serotinus Ruzhentsev 1951
†Boesites texanus Böse 1919
G. †Metapronorites Librovitch 1938
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†Metapronorites ellesmerensis Nassichuk 1975
†Metapronorites pseudotimorensis Miller 1930
G. †Pseudopronorites Nassichuk 1975
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†Pseudopronorites arkansiensis Smith 1896
†Pseudopronorites kansasensis Newell 1936
†Pseudopronorites karpinskii Librovitch 1939
†Pseudopronorites llanoensis Plummer and Scott 1937
†Pseudopronorites quinni Gordon 1968