Paleozoic Era, The Permian Period.
palaeos.com/Paleozoic/Permian/Permian.htm
The Permian 286 to 245 Million Years Ago The Permian period lasted from 286 to 245 million years ago and was the last period of the Paleozoic Era. The distinction between the Paleozoic and the Mesozoic is made at the end of the Permian in recognition of the largest mass extinction recorded in the history of life on Earth. It affected many groups of organisms in many different environments, but ...
www.ucmp.berkeley.edu/permian/permian.html
Permian Period Animal Printout. Many amazing animals lived during the Permian Period, which ended with the largest mass extinction in the history of the Earth.
www.enchantedlearning.com/subjects/dinosaurs/dinotemplates/Permianprintouts.shtml
The Permian Period, from 284 to 245 million years ago, is the youngest division of the Paleozoic Era.
tapestry.usgs.gov/ages/permian.html
The Fossil Company - The Palaeozoic Era. An illustrated geological time line for the Palaeozoic era, which includes the Cambrian, Ordovician, Silurian, Devonian, Carboniferous and Permian periods.
www.bobainsworth.com/fossil/palaeozoic.htm
Browse the Gallery Permian Period. All of the fossils found at the Brule site are from the Permian period.
museum.gov.ns.ca/fossils/gallery/perm.htm