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a. pex: it might have lived in a very wide geographic region
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A fossil that is used to date surrounding rock layers is?
This is called an index fossil.
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.
What is an organism used to identify a specific geologic time period called?
An organism used to identify a specific geologic time period is called an index fossil. Index fossils are used by geologists to narrow down the age of rocks and sediment layers based on the known age range of the fossil species.
What is the difference between trace fossil and index fossil?
A trace fossil is one that merely indicates that an organism left evidence of its existence. Some examples would be burrows or footprints that appear in sedimentary rock. An index fossil is of an organism that dates to a particular time in the geologic record, the organism only appearing in a certain segment of that record. Index fossils are indicators of the age of the rock in which they are found.
Does mucrospirifer make a good index fossil?
Yes, Mucrospirifer is a good index fossil because it lived during a specific geologic time period, the Devonian period, and had a wide distribution across different regions. Its distinct shell morphology and abundance in the fossil record make it useful for correlating and dating rock layers.
What is an important characteristic of an index fossil apex?
It must have lived for a short geologic period of time.
What is a important characteristic of a index fossil?
to place events on the geologic time scale
Is it true that To be a useful index fossil a species must have been rare?
No, an index fossil does not have to have been rare to be useful. The key characteristic of an index fossil is that it is easily recognizable, widespread geographically, and existed for a relatively short period of time. This allows geologists to use it to help date the rock layers in which it is found.
A fossil that is used to date surrounding rock layers is?
This is called an index fossil.
What makes a species a good index fossil?
An index fossil is used as an indicator of which era/epoch was preserved. The major characteristic necessary to be an index fossil include abundance, widely distributed, but lived for a short period of time.
What are index and what do geologists learn from them?
Index fossils are very important to geologists because they identify geological. The fossil snail is a particularly difficult animal to study.
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
