These strange animals are ... roots can be traced back approximately 64 million years to the early Cenozoic era. Native to the Amazon rainforest, this bird is notable for its distinctive ...

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 ...

In 2001, researchers reported that a fossil found in China in 1985 is the remains of a tiny, furry animal that was a ... In the early Cenozoic era, after the dinosaurs became extinct, the number ...

After the extinction of the dinosaurs during the Cretaceous mass extinction (the fifth mass extinction) about 66 million ...

In turn, the extinction of the dinosaurs and several other animal groups 65.5 million years ago defines the beginning of the Cenozoic era. We are including several pages with geologic time scale data ...