This site provides an overview of the Mesozoic Era. Additional information about each of the time periods comprising the Mesozoic Era is obtained by clicking the respective subdivisions on the provided time scale. Users may also browse by topic including stratigraphy, ancient life, fossil localities, and tectonics. Specific topics of interest are the origin of gymnosperms and angiosperms, and the evolution and extinction of dinosaurs. The site also features outcrop photos of the Upper Cretaceous Hell Creek and Paleogene Fort Union Formations of Montana to aid in discussions of the Mesozoic and the demise of dinosaurs.
