Does mammals start from 60 millions ago# GeoSpace - 地球与空间科学y*z2007-10-05 07:101 楼Right after K/T extinction ?Did K/T extinction wiped out 95% land animals ?
D*r2007-10-05 07:102 楼first question,kt boutdary is about 65 millions years agoand mammals starts before that, I'd guess 100 million【在 y****z 的大作中提到】: Right after K/T extinction ?: Did K/T extinction wiped out 95% land animals ?