Smithsonian Institution
National Museum of Natural History: Paleobiology: The Mississippian Period
Journey into the past while reading this comprehensive overview of the Mississippian Period that covers topics such as life in the seas, tetrapods and other life on land, fossil evidence, and climate and tectonics.
American Geosciences Institute
American Geosciences Institute: Dynamic Planet
Seven hands-on lessons module where students learn about our dynamic planet. These inquiry-based explorations investigate scientific models, earthquakes and seismic waves, Earth's interior, Earth movements, the lithosphere, plate...
CK-12 Foundation
Ck 12: Earth Science: Precambrian Continents and Plate Tectonics Study Guide
[Free Registration/Login may be required to access all resource tools.] Summarizes the key points about geological processes that took place during the Precambrian Era. Includes a few questions to check for understanding.