Called Hadrocodium wui, the little creature had certain key mammalian ... and molars. In the early Cenozoic era, after the dinosaurs became extinct, the number and diversity of mammals exploded.

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 ...

Primates are smart, flexible, and adaptive creatures. How have they responded ... Covert, H.H. Biology of early Cenozoic primates. In Comparative Primate Biology, Systematics, Evolution, and ...

With animals, whole groups disappeared ... When the Cretaceous Period and Mesozoic Era ended 66 million years ago, the Palaeogene Period and the Cenozoic Era began. In the Palaeogene, the continents ...