Class [Mammalia] Linnaeus, 1758 - mammals
Ref: G.B. Corbet & J.E. Hill, 1991 [inferred name]; Count: [*] 21o;132f;1061g;4316s; ‡1f;5g;38s
   Order Lagomorpha Brandt, 1855 - lagomorphs
  Ref: G.B. Corbet & J.E. Hill, 1991: 208; Count: [*] 2f;12g;65s
     Family Leporidae Batsch, 1788 - hares and rabbits
    Ref: G.B. Corbet & J.E. Hill, 1991: 209; Count: [*] 11g;46s
       Genus Sylvilagus Gray, 1867 - cottontails
      Ref: G.B. Corbet & J.E. Hill, 1991: 210; Count: [*] 12s
         Sylvilagus graysoni (Allen, 1877) - Tres Marias cottontail
        Ref: G.B. Corbet & J.E. Hill, 1991: 211; Count: -