The Evolution of Life on Earth

Events

Approx. 1 January 1900
Approx. 1 January 1905 - Approx. 1 January 1910
Approx. 1 January 1910 - Approx. 1 January 1920
1 January 1920 - 1 January 1925
1 January 1925 - 1 January 1930
1 January 1930 - 1 January 1935
1 January 1935 - 1 January 1940