Fossils and geologic time

Match it! Select the correct answer from the pull down...Good luck!

A technique used to date materials based on the decay of certain elements

A record of the major events and diversity of life forms present in Earth's history

An organism that has a back bone

a cold blooded vertebrate that lives mostly on land with scaly skin

An organism that lacks a backbone

A distinct segment of time in history with a particular specific event or characteristic.

a scientist who studies fossils

a cold blooded vertebrate that lives on land and in water with slimy skin