3 min read At the dawn of the Paleogene—the beginning of the Cenozoic era—dinosaurs, pterosaurs, and giant marine reptiles were conspicuously absent from the face of the Earth. Rodent-size ...

There is no evidence that they ever occupied Antarctica or Australia/Oceania ... Covert, H.H. Biology of early Cenozoic primates. In Comparative Primate Biology, Systematics, Evolution, and ...

After the dinosaurs died out, mammals evolved into many different shapes and sizes as they filled the empty spaces left by the dinosaurs during the Cenozoic era. This period is also called the ...