| molecular phylogeography and genetic differentiation of blue sheep pseudois nayaurszechuanensis and pseudois schaeferi in china. | within the genus pseudois (bovidae, artiodactyla), two challenges are faced by taxonomists. first, the designation of the two subspecies of blue sheep, pseudois nayaur nayaur and pseudois nayaurszechuanensis, tends to be questionable with the accumulation of morphological and molecular data. second, the taxonomic status of the dwarf blue sheep (pseudois schaeferi) has been controversial since its discovery, and molecular analyses with relatively small sample sizes have not painted a clear pictur ... | 2008 | 18565767 |