Classification of Van Valen 1978
G. †Ragnarok Van Valen 1978
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†Ragnarok harbichti Van Valen 1978
†Ragnarok nordicum Jepsen 1930
†Ragnarok wovokae Van Valen 1978
G. †Thangorodrim Van Valen 1978
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†Thangorodrim pugnax Simpson 1935
†Thangorodrim thalion Van Valen 1978
Ph. Priapulida Théel 1906 [priapulid worm]
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G. †Protungulatum Sloan and Van Valen 1965
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†Protungulatum gorgun Van Valen 1978
†Protungulatum sloani Van Valen 1978
Fm. †Pantolestidae Cope 1884
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G. †Arctocyonides Lemoine 1891
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†Arctocyonides ferox Cope 1883
†Arctocyonides montanensis Gidley 1919
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Invalid names: Neoclaenodon latidens Gidley 1919 [synonym]
†Arctocyonides mumak Van Valen 1978
Invalid names: Claenodon Scott 1892 [synonym]
G. †Chriacus Cope 1883
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†Chriacus baldwini Cope 1882
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Invalid names: Chriacus schlosserianus Cope 1888 [synonym], Chriacus truncatus Cope 1884 [synonym], Metachriacus provocator Simpson 1935 [synonym], Spanoxyodon latrunculus Simpson 1935 [synonym], Tricentes crassicollidens Cope 1884 [synonym]
†Chriacus calenancus Van Valen 1978
†Chriacus katrinae Van Valen 1978
†Chriacus metocometi Van Valen 1978
†Chriacus oconostotae Van Valen 1978
Invalid names: Epichriacus Scott 1892 [synonym], Metachriacus Simpson 1935 [synonym], Spanoxyodon Simpson 1935 [synonym], Tricentes Cope 1884 [synonym]
G. †Colpoclaenus Patterson and McGrew 1962
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†Colpoclaenus procyonoides Matthew 1937
†Colpoclaenus silberlingi Gidley 1919
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Invalid names: Claenodon vecordensis Simpson 1935 [synonym]
G. †Desmatoclaenus Gazin 1941
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†Desmatoclaenus dianae Van Valen 1978
†Desmatoclaenus mearae Van Valen 1978
†Desmatoclaenus protogonioides Cope 1882
G. †Loxolophus Cope 1885
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†Loxolophus kimbetovius Matthew 1937
†Loxolophus pentacus Cope 1888
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Invalid names: Chriacus ruetimeyerianus Cope 1888 [synonym], Protogonodon grangeri Simpson 1936 [synonym], Protogonodon stenognathus Matthew 1897 [synonym]
Invalid names: Paradoxodon Scott 1892 [synonym], Paradoxodonta Strand 1943 [synonym], Protogonodon Scott 1892 [synonym]
G. †Prothryptacodon Simpson 1935
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†Prothryptacodon ambiguus Van Valen 1967
Invalid names: Pantinomia Van Valen 1967 [synonym]
Fm. †Mioclaenidae Osborn and Earle 1895 [condylarth]
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G. †Ellipsodon Scott 1892
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†Ellipsodon witkoi Van Valen 1978
†Ellipsodon yotankae Van Valen 1978
G. †Litaletes Simpson 1935
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†Litaletes ondolinde Van Valen 1978
†Litaletes sternbergi Gazin 1939
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Invalid names: Ellipsodon shepherdi Gazin 1939 [synonym], Jepsenia mantiensis Gazin 1939 [synonym]
Invalid names: Jepsenia Gazin 1939 [synonym]
G. †Promioclaenus Trouessart 1904
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†Promioclaenus acolytus Cope 1882
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Invalid names: Ellipsodon aquilonius Simpson 1935 [synonym], Mioclaenus minimus Cope 1882 [synonym]
†Promioclaenus turgidunculus Cope 1888
†Promioclaenus vanderhoofi Simpson 1936
†Promioclaenus wilsoni Van Valen 1978
Invalid names: Tiznatzinia Simpson 1936 [synonym]
G. †Protoselene Matthew 1897
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†Protoselene bombadili Van Valen 1978
Invalid names: Dracoclaenus Gazin 1939 [synonym]
Fm. †Hyopsodontidae Trouessart 1879 [condylarth]
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G. †Oxyprimus Van Valen 1978
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†Oxyprimus erikseni Van Valen 1978
†Oxyprimus galadrielae Van Valen 1978
†Oxyprimus putorius Van Valen 1978
G. †Litomylus Simpson 1935
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†Litomylus aequidens Matthew 1937
†Litomylus alphamon Van Valen 1978
†Litomylus osceolae Van Valen 1978
†Litomylus perissus Gazin 1941
Invalid names: Oxytomodon Gazin 1941 [synonym]
Fm. †Periptychidae Cope 1882 [condylarth]
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G. †Mimatuta Van Valen 1978
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†Mimatuta makpialutae Van Valen 1978
†Mimatuta minuial Van Valen 1978
†Mimatuta morgoth Van Valen 1978
G. †Anisonchus Cope 1881
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†Anisonchus athelas Van Valen 1978
†Anisonchus eowynae Van Valen 1978
†Anisonchus gillianus Cope 1882
Invalid names: Zetodon Cope 1883 [synonym]
G. †Oxyacodon Osborn and Earle 1895
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†Oxyacodon agapetillus Cope 1884
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Invalid names: Escatepos campi Reynolds 1936 [synonym], Oxyacodon priscilla Matthew 1937 [synonym]
†Oxyacodon cophater Cope 1884
†Oxyacodon josephi Van Valen 1978
†Oxyacodon marshater Van Valen 1978
†Oxyacodon tecumsae Van Valen 1978
Invalid names: Escatepos Reynolds 1936 [synonym]
G. †Periptychus Cope 1881
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†Periptychus coarctatus Cope 1883
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Invalid names: Periptychus matthewi Simpson 1936 [synonym], Plagioptychus matthewi Simpson 1936 [synonym]
Invalid names: Carsioptychus Simpson 1936 [synonym], Plagioptychus Matthew 1936 [synonym]
G. †Eoconodon Matthew and Granger 1921
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†Eoconodon copanus Van Valen 1978
†Eoconodon coryphaeus Cope 1885
†Eoconodon nidhoggi Van Valen 1978
G. †Goniacodon Scott 1892
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†Goniacodon crassicuspis Cope 1882
†Goniacodon hiawathae Van Valen 1978
Invalid names: Triisodon Cope 1881 [synonym]
G. †Oxyclaenus Cope 1884
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†Oxyclaenus cuspidatus Cope 1884
Invalid names: Carcinodon Scott 1892 [synonym]
Fm. †Mesonychidae Cope 1875 [condylarth]
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G. †Platymastus Van Valen 1978
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†Platymastus mellon Van Valen 1978
†Platymastus palantir Van Valen 1978
†Chriacus orthogonius Russell 1929
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Invalid names: Chriacus pusillus Simpson 1935 [synonym], Metachriacus punitor Simpson 1935 [synonym]
†Conoryctes comma Cope 1881
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Invalid names: Triisodon heilprinianus Cope 1882 [synonym]
†Ectocion parvus Granger 1915
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Invalid names: Meniscotherium priscum Granger 1915 [synonym]
†Ectoconus ditrigonus Cope 1882
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Invalid names: Ectoconus majusculus Matthew 1937 [synonym]
†Litomylus dissentaneus Simpson 1935
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Invalid names: Litomylus scaphicus Gazin 1956 [synonym], Litomylus scaphiscus Gazin 1956 [synonym]
†Loxolophus hyattianus Cope 1885
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Invalid names: Chriacus priscus Cope 1888 [synonym]
†Mimotricentes subtrigonus Cope 1881
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Invalid names: Mimotricentes angustidens Simpson 1937 [synonym], Tricentes latidens Gidley 1935 [synonym]
†Mioclaenus turgidus Cope 1881
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Invalid names: Mioclaenus lydekkerianus Cope 1888 [synonym]
†Phenacodus primaeous Cope 1873
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Invalid names: Phenacodus grangeri Simpson 1935 [synonym]
†Thryptacodon antiquus Matthew and Granger 1915
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Invalid names: Thryptacodon loisi Kelley and Wood 1954 [synonym], Thryptacodon olseni Matthew and Granger 1915 [synonym], Thryptacodon pseudarctos Simpson 1928 [synonym]
†Thryptacodon demari Gazin 1956
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Invalid names: Thryptacodon belli Gazin 1956 [synonym]
†Triisodon quivirensis Cope 1881
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Invalid names: Sarcothraustes antiquus Cope 1882 [synonym], Triisodon conidens Cope 1882 [synonym]