The Albian is a stage in the geological time scale that occurred during the Late Cretaceous period, approximately 113 to 100 million years ago. It is characterized by significant geological and biological changes, including the diversification of marine life and the appearance of various dinosaur species. The Albian is known for its rich fossil record, which provides insights into the ecosystems of that time. During the Albian, the climate was generally warm, and sea levels were high, leading to widespread shallow seas. This period saw the development of important rock formations, such as the Albian Chalk in Europe, which is known for its chalky deposits. The Albian stage is crucial for understanding the evolution of life on Earth during the Cretaceous.