Fossil Dating 2021

Front

During which period did ichthyosaurs become extinct?

Back

Cretaceous

Front

Which statement is true regarding ammonites and ferns?

Back

Ammonites are older than ferns.

Front

In which type of rock can fossils be found?

Back

Sedimentary rock.

Front

What is the term for all the known fossils and their position in the rock layers?

Back

Fossil Record.

Front

How do we know there was a mass extinction after the red line layer?

Back

There are more fossils under the red line than over, suggesting organisms died off.

Front

What are ichthyosaurs?

Back

Ichthyosaurs are marine reptiles that lived during the Mesozoic era.

Front

What is the significance of the fossil record?

Back

The fossil record provides evidence of the history of life on Earth and shows how species have changed over time.

Front

What is a mass extinction event?

Back

A mass extinction event is a rapid decrease in the biodiversity on Earth, typically characterized by the extinction of a large number of species in a short period.

Front

What type of rock is primarily associated with fossil formation?

Back

Sedimentary rock is primarily associated with fossil formation.

Front

What evidence do paleontologists use to study extinct species?

Back

Paleontologists use fossils, which are preserved remains or traces of organisms, to study extinct species.