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 ...

With animals, whole groups disappeared. Whereas with plants, you see a lot of extinction ... the Palaeogene Period and the Cenozoic Era began. In the Palaeogene, the continents drifted even closer to ...

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.