3 min read At the dawn of the Paleogene—the beginning of the Cenozoic era—dinosaurs ... whales in the mid- to late Paleogene. The huge animals evolved from land mammals that took to the ...

The family level of plants may be more diverse than animals, so that's why you don't get the massive losses of these big groups, because some element of them finds a way to survive extinction.' When ...

Daily and seasonal variations in temperature, annual cycles of precipitation, and larger swings in climate shape adaptations of plants and animals and ... Biology of early Cenozoic primates.