International Commission on Stratigraphy (ICS)

The International Commission on Stratigraphy (ICS) is a global organization responsible for developing and maintaining standardized systems to classify Earth's layers of rocks and fossils. These classifications help scientists understand Earth's geological history by dividing time into named periods, epochs, and ages based on significant events and dating methods. By providing consistent terminology and frameworks, the ICS ensures researchers worldwide communicate effectively about Earth's history, evolution, and geological changes over millions of years.