Dalton's Geology Timeline

beginning of cambrian period 570M-500M

Oct 2, 1909

end of cambrian period. beginning of ordovician period. 500M-435M

Oct 2, 1921

end of ordovicain 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

ending 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 cretacious period. beginning of tertiary period 65M-1.8M

Oct 2, 1997

end of tertiary period.beginning of Quaternary period 1.8M- Present

Oct 2, 2008

end of quarternary period. Present

Oct 2, 2011