Oryzomys
... that the number of species in the rodent genus Oryzomys was reduced from 43 to 5 in 2006?
... that the number of species in the <a href="./Rodent" id="mwEjU" rel="mw:WikiLink" title="Rodent">rodent</a> <a href="./Genus" id="mwEjY" rel="mw:WikiLink" title="Genus">genus</a> <i id="mwEjc"><b id="mwEjg"><a href="./Oryzomys" id="mwEjk" rel="mw:WikiLink" title="Oryzomys">Oryzomys</a></b></i> was reduced from 43 to 5 in 2006?