Scientists Say This Rat Was Your Great-Great-Great-Great-(...)-Great-Great-Great-Great-Grandmother

This rat with way too many sharp teeth is your great x 4 x 10^6-grandmother. That's what scientists have discovered after six years of research—the Protungulatum donnae is the common ancestor to all mammals, from humans to horses to lions. All except Nicholas Cage, who descends from velociraptors. »2/07/13 6:37pm2/07/13 6:37pm