The Lovely of February The Cenozoic Era: The Rise of The Mammals

During the Cenozoic, mammals evolved from their somewhat insignificant stature during the Mesozoic to include giant species that have gone extinct in modern times. While none of the mammals ever reached the size of the dinosaurs, there were some species that dwarfed their modern-day relatives. Everyone knows about mammoths, but during the Cenozoic Era some birds stood 7-feet tall. There were beavers 7 feet long! These creatures were typical of the growth achieved by the “new life” in the early Cenozoic.