Evolution, systematics, and phylogeography of pleistocene horses in the new world: a molecular perspective. oleh Jaco Weinstock, Eske Willerslev, Andrei Sher, Wenfei Tong, Simon Y W Ho, Dan Rubenstein, John Storer, James Burns, Larry Martin, Claudio Bravi, Alfredo Prieto, Duane Froese, Eric Scott, Lai Xulong, Alan Cooper