The Field Museum
Field Museum: Exhibits: Evolving Planet: Carboniferous
Explore this impressive compilation of scientific research focused on the Carboniferous Period in the late Paleozoic Era.
University of California
Ucmp: Paleozoic Era: Stratigraphy
This site contains a chart showing the progression of the Paleozoic Era. Each section of the chart leads to information about the geological, biological, and climatic elements of a specific period of the era.