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Module 7 Vocabulary

The Fossil Record

Catastrophism The view (or belief) that most of the earth's geological features formed through catastrophes.
Catastrophe A sudden, violent change in nature such as a major flood or volcanic eruption.
Uniformitarianism The view (or belief) that most of earth's geological features formed over Millions of years, slowly and gradually.
Unconformity A surface of erosion that seperates one layer of rock from another.
Petrifaction The conversion of organic material into stone.
Resin A sticky, liquid substance that usually hardens when exposed to air.
Fossil Record Sum total of all fossils on the earth.
Extinct A term that refers to a plant or animal that was once living but now is not.
Placoderms Fish that had bony plates covering their heads instead of scales. Assumed to be extinct.
Amphibians Creatures that live both in and out of water.
Created by: angie4