This timeline of evolution of life represents the current scientific theory outlining
the major events during the development of life on planet Earth. In biology ...
This Earth timeline highlights some of the important events that have shaped our
world. The pages in the timeline contain interesting video clips from BBC ...
So humans have been around for a mere 0.004% of the Earth's history. View the
Tree of Life. Jump to: Geological timeline | Geological time periods | Big Five ...
From fossil evidence, it appears that life may have existed on Earth as early as
3.5 billion years ago. This suggests that life must have evolved sometime during
Biological and Geologic Timeline of the Earth. The origin of the Earth and the
Moon. The evolution of life on Earth.
Evolutionary Timeline ... 4000, Bombardment of the Earth by planetesimals stops.
3800, The Earth's crust solidifies--formation of the oldest rocks found on Earth.
Jun 13, 2013 ... Ever wondered how long each Geological Era lasted? From the Dinosaur age to
where we are today, the Earth's history has been put into a ...
This page contains an image of the Earths Timeline and a number of tables. Ideal
for schools to download. Geological periods, first appearance of new ...
Jun 30, 2014 ... A photo timeline of Earth's 4.5 billion years of geologic history.
Humans have walked the Earth for 190,000 years, a mere blip in Earth's 4.5-
billion-year history. A lot has happened in that time. Earth formed and oxygen