Class Mammalia Linnaeus, 1758 - mammals
   Subclass Theria Parker & Haswell, 1897
     Order Artiodactyla Owen, 1848 - even-toed ungulates see Order Cetartiodactyla Montgelard, Catzeflis & Douzery, 1997
       Family Cervidae Batsch, 1788 - deer
         Subfamily Capreolinae Brookes, 1828
           Genus Capreolus Gray, 1821 - roe deer
             1 Capreolus capreolus (Linnaeus, 1758) - western roe deer
             2 Capreolus pygargus (Pallas, 1771) - eastern roe deer