Last modified on 24 November 2014, at 14:46

Microtus pennsylvanicus

DomainEukaryota • RegnumAnimalia • PhylumChordata • SubphylumVertebrata • InfraphylumGnathostomata • SuperclassisTetrapoda • ClassisMammalia • SubclassisTheria • InfraclassisEutheria • OrdoRodentia • SuperfamiliaMuroidea • FamiliaCricetidae • SubfamiliaArvicolinae • GenusMicrotus • Species: Microtus pennsylvanicus Ord, 1815

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