Class Mammalia Linnaeus, 1758 - mammals
Count: [*†*] 5o; †16o;76f;282g;438s
Subclass Boreosphenida Luo, Cifelli & Kielan-Jaworowska, 2001 - tribotherians
see Clade Boreosphenida Luo, Cifelli & Kielan-Jaworowska 2001
Count: [*†*] 4o; †5o;24f;82g;141s
Infraclass Eutheria Gill, 1872
Count: [*†*] 2o; †3o;12f;40g;62s
1 Genus †Eomaia Ji, Luo, Yuan, Wible, Zhang & Georgi, 2002, incertae sedis [monotypic]
Count: [†*] †1s [25 Apr 2022]
2 Genus †Montanalestes Cifelli, 1999, incertae sedis [monotypic]
Count: [†*] †1s [25 Apr 2022]
3 Family †Otlestidae Nessov, 1985, incertae sedis
Count: [†*] †3g;4s [25 Apr 2022]
4 Magnorder Epitheria McKenna, 1975
see Cohort Placentalia Owen, 1837
Count: [*†*] 2o; †3o;11f;35g;56s