Evolution Vocab Flashcard

Front

Age of a rock in years since formation.

Back

absolute age

Front

Study of organism distribution worldwide

Back

Biogeography

Front

Fossil type formed when a mold fills with minerals and hardens.

Back

cast

Front

A term for a species with no known living individuals.

Back

extinct

Front

Trace of an ancient organism preserved in rock.

Back

Fossil

Front

Top rock layer & fossils are youngest; bottom is oldest.

Back

Law of Superposition

Front

Event where many species go extinct simultaneously

Back

mass extinction

Front

Fossil type formed when a shell or hard part dissolves, leaving an empty space.

Back

mold

Front

Age of a rock compared to rock layers

Back

relative age

Front

Small, solid pieces from rocks or living things

Back

sediment