Rock Age Quiz

Layer C

Layer D

Layer B

Layer A

12 days

4 days

8 days

6 days

Letter D

Letter E

There is no igneous intrusion

Letter A

mass extinctions

places where there is a continuous rock record with no gaps in time.

missing layers of rock and geologic time

fossils in rocks

Nonconformity

Liquidation conformity

Angular unconformity

Disconformity

T-Rex bones

Fly trapped in amber and saber tooth tiger

Petrified tree logs

Worm burrows and dinosaur footprints

Insects

Mammals

Fishes

Dinosaurs

Large number of species may have died under conditions where their bodies were not fossilized.

Only animals fossilize, the evolutionary history of plants cannot be studied using fossils.

The fossil record is biased because it favors organisms that were widespread and abundant.

The fossil record is biased because most preserved organisms contain hard body structures.

3

1

4

2

Insect preserved in amber.

Footprint from a dinosaur.

Imprint of a shell on a rock.

Piece of petrified wood.