Classification of Simpson 1928

Cl. Mammalia Linnaeus 1758 [mammal]
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Or. †Multituberculata Cope 1884 [multituberculate]
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Fm. †Microcleptidae Simpson 1928
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G. †Hypsiprymnopsis Dawkins 1864
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Invalid names: Hypsiprymnopsis rhaeticus Dawkins 1864 [nomen dubium]
G. †Microcleptes Simpson 1928
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†Microcleptes fissurae Simpson 1928
†Microcleptes moorei Owen 1871
Invalid names: Microlestes Plieninger 1847 [replaced]
G. †Thomasia Poche 1908
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†Thomasia antiqua Plieninger 1847
Subor. †Plagiaulacoidea Ameghino 1889
Subor. †Tritylodontoidea Simpson 1928
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Fm. †Tritylodontidae Cope 1884
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G. †Chalepotherium Simpson 1928
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†Chalepotherium plieningeri Ameghino 1903
G. †Oligokyphus Hennig 1922
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†Oligokyphus biserialis Hennig 1922
†Oligokyphus triserialis Hennig 1922
G. †Stereognathus Charlesworth 1854
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†Stereognathus ooliticus Charlesworth 1854
G. †Tritylodon Owen 1884
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†Tritylodon fraasi Lydekker 1887
†Tritylodon longaevus Owen 1884
Invalid names: Triglyphus Fraas 1866 [synonym]
Or. †Pantotheria Marsh 1880
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Fm. †Amphitheriidae Owen 1846
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G. †Amphitherium de Blainville 1838
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†Amphitherium prevostii von Meyer 1832
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Invalid names: Amphitylus oweni Osborn 1888 [synonym]
Fm. †Dicrocynodontidae Marsh
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G. †Peraiocynodon Simpson 1928
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Fm. †Dryolestidae Marsh 1879
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G. †Amblotherium Owen 1871
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†Amblotherium nanum Owen 1871
†Amblotherium pusillum Owen 1866
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Invalid names: Achyrodon pusillus Owen 1871 [synonym], Amblotherium soricinum Owen 1871 [synonym], Stylodon robustus Owen 1866 [synonym]
Invalid names: Achyrodon Owen 1871 [synonym], Stylodon Owen 1866 [replaced]
G. †Kurtodon Osborn 1887
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†Kurtodon pusillus Owen 1866
G. †Peraspalax Owen 1871
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†Peraspalax talpoides Owen 1871
G. †Phascolestes Owen 1871
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Invalid names: Phascolestes longirostris Owen 1871 [synonym]
Fm. †Paurodontidae Marsh 1887
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G. †Peramus Owen 1871
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†Peramus tenuirostris Owen 1871
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Invalid names: Leptocladus dubius Owen 1871 [synonym], Spalacotherium minus Owen 1871 [synonym]
Or. †Symmetrodonta Simpson 1925 [symmetrodont]
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Fm. †Spalacotheriidae Marsh 1887
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G. †Peralestes Owen 1871
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G. †Spalacotherium Owen 1854
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Or. †Triconodonta Osborn 1888 [triconodont]
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Fm. †Triconodontidae Marsh 1887
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Subfm. †Amphilestinae Osborn 1888
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G. †Amphilestes Owen 1859
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G. †Phascolotherium Owen 1838
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†Phascolotherium bucklandi Broderip 1828
Invalid names: Triconodontinae Hay 1902 [empty]
Superfm. †Plagiaulacoidea Ameghino 1889
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Fm. †Plagiaulacidae Gill 1872
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G. †Bolodon Owen 1871
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†Bolodon crassidens Owen 1871
†Bolodon elongatus Simpson 1928
†Bolodon osborni Simpson 1928
G. †Ctenacodon Marsh 1879
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†Ctenacodon falconeri Owen 1871
†Ctenacodon minor Falconer 1857
†Ctenacodon scindens Simpson 1928
†Ctenacodon serratus Marsh 1879
G. †Loxaulax Simpson 1928
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†Loxaulax valdensis Woodward 1911
G. †Plagiaulax Falconer 1857
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†Plagiaulax becklesii Falconer 1857
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Invalid names: Plagiaulax medius Owen 1871 [synonym]
Invalid names: Plagiaulax dawsoni Woodward 1891 [nomen dubium]
Or. Marsupialia Illiger 1811 [marsupial]
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Subor. Polyprotodontia Owen 1866
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Fm. Didelphidae Gray 1821 [opossum]
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G. †Eodelphis Matthew 1916
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†Eodelphis cutleri Woodward 1916