The Upper Carboniferous Period is a geological time period that occurred from approximately 318 million to 299 million years ago. It is also known by several other names such as the Pennsylvanian Period, Late Carboniferous Period, and Upper Mississippian period. The Upper Carboniferous Period is marked by the extensive formation of coal deposits and the evolution of diverse plant and animal life. It was also a time of significant climate change and the emergence of primitive reptiles. The period is of great interest to scientists and researchers studying the evolution of life on Earth and the geological history of our planet.