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Trilobite

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14y ago

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Related Questions

What is fuxianhuia?

A fossil invertebrate from the Lower Cambrian period.


A fossil that is used to date surrounding rock layers is?

This is called an index fossil.


What what is the Cambrian explosion?

The sudden increase in invertebrate fossil diversity


What is fossils organisms that lived a short period of time called?

They are called index fossils.


What must be true for a fossil organism to be useful as a index fossil?

The absolute age of the index fossil was determine by radioactive dating or another absolute method


What two things make a fossil an index fossil?

hiii


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)


What is the relative age of a fossil that can be determined by comparing it to an index fossil is called?

The relative age of a fossil that can be determined by comparing it to an index fossil is called biostratigraphic dating. This method relies on the known age range of the index fossil to estimate the relative age of the fossil being studied.


What is the fossil called that geologists use to determine rock ages?

Index Fossil


What geologic time period was the trilobite fossil associated?

Trilobites were associated with the Paleozoic era, from the Cambrian to the Permian.


To be useful as an index fossil fuel spices must have existed for how long?

To be useful as an index fossil fuel, spices must have existed for about 1000 years.


What is a fossil used to date surrounding rock layers called?

A fossil used to date surrounding rock layers is called a index fossil. Index fossils are particularly useful for determining the relative ages of rock layers in different locations.