How did paleogene get its name?

The Paleogene period got its name from the Greek Words "palaiOS," meaning "old," and "genes," meaning "born of" or "origin." It was established in the early 19th century to describe the time period following the extinction of the dinosaurs, marking a significant phase in Earth's history characterized by the evolution and diversification of mammals and birds. The term reflects its position as the older part of the Cenozoic Era, which is often considered the "Age of Mammals." The Paleogene spans from about 66 to 23 million years ago.