Class [Mammalia] Linnaeus, 1758 - mammals
   Order Rodentia Bowdich, 1821 - rodents
     Family Muridae Batsch, 1788 - rats, mice, hamsters, voles, lemmings, and gerbils
       Subfamily Murinae Batsch, 1788 - Old World mice and rats
         Genus Apodemus Kaup, 1829 - Old World wood and field mice
           Apodemus microps Kratochvil & Rosicky, 1952 - pygmy field mouse see Apodemus uralensis (Pallas, 1811)