What is the Geologic Time Scale?

Preservation

Living Fossils

Compression

extremophiles

The geological time scale is a system of chronological dating that relates geological rock strata to time, and is used by geologists, paleontologists

Original remains can be preserved in ice or amber (tree sap). They protect the organisms from decay. The entire plant or animal is preserved.

These are living organisms that are similar in appearance to their fossilized distant ancestors

When an organism dies, the hard parts of their bodies settle at the bottom of the sea bed and are covered by sediment

The organisms which live in extreme environmental conditions on earth are called extremophiles