The Geological Scale, also known as the Geological Time Scale, is a system used by geologists and paleontologists to organize Earth's history into different time intervals. It divides time into eons, eras, periods, epochs, and ages, helping scientists understand the timing and relationships of geological events and the evolution of life. Each division of the Geological Scale is marked by significant events, such as mass extinctions or major geological changes. For example, the Cretaceous Period is known for the dominance of dinosaurs, while the Paleozoic Era saw the emergence of early life forms in the oceans.