Works Cited
"Climate Has Changed throughout Earth's History." National Park Service. U.S. Department of the Interior, 10 Sept. 2010. Web. 6 Nov. 2014.
"Climate Has Changed throughout Earth's History." National Park Service. U.S. Department of the Interior, 10 Sept. 2010. Web. 6 Nov. 2014.
"Climate Has Changed throughout Earth's History." National Park Service. U.S. Department of the Interior, 10 Sept. 2010. Web. 6 Nov. 2014.
"Climate Has Changed throughout Earth's History." National Park Service. U.S. Department of the Interior, 10 Sept. 2010. Web. 6 Nov. 2014.
"Climate Has Changed throughout Earth's History." National Park Service. U.S. Department of the Interior, 10 Sept. 2010. Web. 6 Nov. 2014.
"Climate Has Changed throughout Earth's History." National Park Service. U.S. Department of the Interior, 10 Sept. 2010. Web. 6 Nov. 2014.
"Mesozoic Era: The Age of Reptiles." Live Science. Purch, n.d. Web. 6 Nov. 2014.
"Paleozoic Era." PBS. PBS, n.d. Web. 5 Nov. 2014.
"The Paleozoic Era." Science Views. Calvin & Rosanna Hamilton, n.d. Web. 4 Nov. 2014.
"Paleozoic Era." University Of California Museum Of Paleontology. Regents of the U of California, n.d. Web. 4 Nov. 2014.
"Paleozoic Era." PBS. PBS, n.d. Web. 5 Nov. 2014.
"The Paleozoic Era." Science Views. Calvin & Rosanna Hamilton, n.d. Web. 4 Nov. 2014.
"Paleozoic Era." University Of California Museum Of Paleontology. Regents of the U of California, n.d. Web. 4 Nov. 2014.