The early Tertiary marks the end of the dominance of the dinosaurs and reptiles and the rise of mammals

Biology May 24, 2021

The early Tertiary marks the end of the dominance of the dinosaurs and reptiles and the rise of mammals.

The mass extinction event that occurred that marked the end of the Mesozoic wiped out roughly 76 percent of land and marine organisms including the dinosaurs. The removal the dinosaurs, which until then were the dominant species, allowed for the evolution of mammals.