Fossils

Front

What is hardened tree sap called?

Back

Amber

Front

Which rock layer most likely contains fossils of the most recently evolved organisms?

Back

Layer 1

Front

What is the best index fossil among the following: Gastropod, Trilobite, Crinoid, Coral, Ammonite?

Back

Ammonite

Front

What type of fossil forms when minerals soak into buried remains, replacing them and changing them into rock?

Back

Petrified fossil

Front

What do geologic columns represent in terms of sedimentary rocks?

Back

They represent the fossil record of different geologic time periods.

Front

What is an index fossil?

Back

An index fossil is a fossil that is used to define and identify a particular time period in the geologic time scale.

Front

What is the significance of the Ammonite as an index fossil?

Back

Ammonites are significant because they existed for a relatively short period and are widely distributed, making them useful for dating rock layers.

Front

What is a mold fossil?

Back

A mold fossil is a hollow impression left in sedimentary rock by the remains of an organism.

Front

What is a cast fossil?

Back

A cast fossil is a solid copy of the shape of an organism that forms when minerals fill a mold.

Front

What is a preserved fossil?

Back

A preserved fossil is an organism that has been preserved in its original form, often in amber, ice, or tar.