The Mississippian Period
The Mississippian Period: A Time of Shallow Seas and Marine Marvels The Mississippian Period (approximately 359 to 323 million years ago) represents the first half of the Carboniferous Period in North America. It is characterized by warm, shallow seas, extensive limestone deposition, and thriving marine ecosystems. This era set the stage for later terrestrial evolution […]
The Pennsylvanian Period
The Pennsylvanian Period: The Age of Coal Forests The Pennsylvanian Period (approximately 323 to 299 million years ago) is the latter half of the Carboniferous Period in North America, following the Mississippian. This time is famous for its vast swampy forests, which led to the formation of extensive coal deposits, and for significant evolutionary advancements […]