Tanner's Geology Timeline

Beginning of Cambrian period 570M-500M

Jan 2, 1909

End of Cambrian period. Beginning of Ordovician period. 500M-435M

Jan 2, 1921

End of Ordovician period. Beginning of Silurian Period. 435M-395M

Oct 2, 1932

Trilobites

Oct 1, 1935

End of Silurian period. Beginning of Devonian period 395M-345M

Oct 2, 1939

End of Devonian period. Beginning of Carboniferous period 345M-280M

Oct 2, 1948

End of Carboniferous period. Beginning of Permian period 280M-225M

Oct 2, 1959

End of Permian period. Beginning of triassic period 225M-195M

Oct 2, 1969

End of Triassic period. Beginning of Jurassic period 195M-136M

Oct 2, 1974

End of Jurassic period. Beginning of Cretaceous period 136M-65M

Oct 2, 1984

End of Cretaceous period. Beiginning of Tertiary period 65M-1.8M

Oct 2, 1997

End of Tertiary period. Beginning of Quaternary peruiod 1.8M-Present

Oct 2, 2008

End of Quaternary period. Present

Oct 2, 2011