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Q: What time period did index fossils live?
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What is fossils organisms that lived a short period of time called?

They are called index fossils.


How are index fossils different from original fossil remains?

Index fossils are original fossil remains, just a specific subcategory of them. Index fossils are used by paleontologists to identify a particular period of time and often a subperiod of time - the specific fossil is chosen as an index fossil because it is very specific to a time period and allows the other fossils and remains around them to be identified to the same time period.


What is fossil form a specific time period?

Index fossils (also known as guide fossils, indicator fossils or zone fossils).


What are the remains of species that existed on Earth for a short period of time?

index fossils


Why are trilobite consider index fossils?

they were index fossils because they were found everywhere, had distinct characteristics, and lived for a short period of time.


Fossil used to compare the relative ages of fossils?

Index fossils are used to compare the relative ages of fossils. These are fossils that are known to have lived during a specific time period, helping to date the rock layers in which they are found. By identifying and comparing index fossils, scientists can determine the relative ages of different rock layers and fossils.


The fossils of organisms that were widely distributed but only lived during a short period of time are called?

They are called index fossils.


Explain how an index fossil can be used date rock.?

Index fossils are fossils of organisms that lived for a relatively short period of time but were widespread geographically. By identifying these index fossils in a particular layer of rock, scientists can determine the age of the rock and correlate it with other rock layers containing the same index fossils. This allows for the relative dating of rock layers based on the presence of specific index fossils.


What does it mean when fossils have been called the index to earth history?

viusualize it back from it;s time period


What fossil used to compare the relative ages of fossils?

An index fossil. An index fossil's age is known, allowing scientists to know the relative age of other fossils based on their position relative to the index fossil. (Ex. If a fossil is deeper in the earth, it is older than the index fossil)


How index fossils can be used to determine the age of rocks?

Index fossils are used to date rocks by correlating the fossils found in the rock layers with known ages of those fossils. Index fossils are distinctive, widespread, and lived for a relatively short period of time. By identifying these fossils in a rock layer, scientists can infer the age of the rock based on the age range of the known fossil.


Do index fossils tell the relative or absolute age of fossils?

Index fossils can be used to help determine the relative age of rock layers. Index fossils are from species that only existed for a short time. Index fossils are found in rock layers. Trilobites and Graptolites are index fossils.