Our common ancestor (Introduction)
Surviving Chixulub asteroid extinction; dionsaurs gone and this survives:-http://www.newscientist.com/article/dn23148-meet-our-earliest-common-mammalian-ancestor.html
Surviving Chixulub asteroid extinction; dionsaurs gone and this survives:-http://www.newscientist.com/article/dn23148-meet-our-earliest-common-mammalian-ancestor.html