Index Fossils

Examine the image here. Hint: Use the slides to get a better view. Which organism(s) appeared after the trilobites

• Gastropod

• Trilobite

• Crinoid

• Coral

• Ammonite

Tags

NGSS.MS-ESS1-4

NGSS.MS-LS4-1

Examine the image here. Hint: Use the slides to get a better view. Trilobites appeared on Earth __________ gastropods

• before

• after

Tags

NGSS.MS-ESS1-4

NGSS.MS-LS4-1

Examine the image here. Hint: Use the slides to get a better view. Gastropods appeared on Earth ____________ ammonites.

• before

• after

Tags

NGSS.MS-ESS1-4

NGSS.MS-LS4-1

Index fossils help determine relative age through correlating rock layers.

• True

• False

Tags

NGSS.MS-ESS1-4

Index fossils CAN tell us the age of a rock layer.

• True

• False

Tags

NGSS.MS-ESS1-4

NGSS.MS-ESS2-3

Fossils of species that existed for short periods and were widespread

• igneous rock

• sedimentary rocks

• index fossils

Tags

NGSS.MS-LS4-1

Which fossil would be most useful in determining the relative age for the rocks in these geologic columns?

• Brachiopod

• Trilobite

• Ammonite

• Turritella

Tags

NGSS.MS-ESS1-4

NGSS.MS-LS4-1

Index fossils are used to determine the relative age of rock layers because they are

• A) Found only in specific locations

• B) Present in all rock layers

• C) Widespread and existed for a short period

• D) Found only in igneous rocks

Tags

NGSS.MS-ESS1-4

Which of the following is NOT a characteristic of index fossils?

• A) They are widespread geographically

• B) They are limited to a short span of geological time

• C) They are found in only one type of rock

• D) They are easily recognizable

Index fossils are most useful in which type of dating?

• A) Radiometric dating

• B) Relative dating

• C) Carbon dating

• D) Absolute dating