Classification of Scott et al. 2013
Fm. †Ptilodontidae Cope 1887
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Fm. †Cimolodontidae Marsh 1889
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Fm. †Eucosmodontidae Jepsen 1940
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Fm. †Pantolestidae Cope 1884
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Fm. †Paromomyidae Simpson 1940
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G. †Ignacius Matthew and Granger 1921
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†Ignacius fremontensis Gazin 1971
†Ignacius frugivorus Matthew and Granger 1921
Fm. †Mixodectidae Cope 1883
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Fm. †Palaechthonidae Szalay 1969
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Fm. †Plesiadapidae Trouessart 1897
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Fm. †Viverravidae Wortman and Matthew 1899
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Fm. †Arctocyonidae Murray 1866 [condylarth]
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Fm. †Hyopsodontidae Trouessart 1879 [condylarth]
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Fm. †Phenacodontidae Cope 1881 [condylarth]
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Fm. †Neoplagiaulacidae Ameghino 1890
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Fm. †Microcosmodontidae Holtzman and Wolberg 1977
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Fm. †Triisodontidae Scott 1892
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Fm. †Pentacodontidae Simpson 1937
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G. †Aphronorus Simpson 1935
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†Aphronorus bearspawensis Scott et al. 2013
†Aphronorus fraudator Simpson 1935