The Paleozoic Era
General Overviews of the Era
Paleozoic Time Period Links (from livescience.com)
http://www.livescience.com/37584-paleozoic-era.html
http://www.livescience.com/28098-cambrian-period.html
http://www.livescience.com/43514-silurian-period.html
http://www.livescience.com/43596-devonian-period.html
http://www.livescience.com/43219-permian-period-climate-animals-plants.html
http://www.livescience.com/28098-cambrian-period.html
http://www.livescience.com/43514-silurian-period.html
http://www.livescience.com/43596-devonian-period.html
http://www.livescience.com/43219-permian-period-climate-animals-plants.html