“…Some examples of relatively recent research results producing fresh insights into phylogenetic relationships within and among genera cover flying squirrels (Oshida et al, 2000a(Oshida et al, , 2000bOshida et al, 2001a;Thorington et al, 2002;Yu et al, 2004Yu et al, , 2006Arbogast, 2007); Japanese species of Sciuridae (Oshida et al, 1996); species of Sciurus (Oshida and Masuda, 2000), Callosciurus (Oshida et al, 2001b), and Dremomys (Li et al, 2008); ground squirrels (Harrison et al, 2003;Herron et al, 2004;Helgen et al, 2009); marmots (Steppan et al, 1999); and chipmunks (Banbury and Spicer, 2007).…”