Welcome to the Natural History Museum!! Look around and explore the website. Learn about the Geologic Time Scale in this website.
The Geologic Time Scale is the time line of the Earth.
Fossils are used as evidence by putting the organisms in order from earliest to latest.
Scientists decide when an era starts and ends by when a Mass Extinction occurs the era ends and when new organisms or cells evolve a new era starts.
The Geologic Time Scale is the time line of the Earth.
Fossils are used as evidence by putting the organisms in order from earliest to latest.
Scientists decide when an era starts and ends by when a Mass Extinction occurs the era ends and when new organisms or cells evolve a new era starts.