Sedgwick's Division

Sedgwick's Division is a classification system used in geology to organize fossils within stratigraphic layers. It divides certain fossil groups into distinct zones based on their presence and abundance, helping geologists identify and correlate the ages of rock layers across different locations. Essentially, it provides a framework for understanding the relative timing of past life by using fossil evidence, aiding in the construction of Earth's historical timeline. This system ensures consistent, precise communication among scientists about the age and characteristics of geological formations.