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How can an index fossil be located at one location but not another?
Wiki User
∙ 10y ago
The rocks in the two areas are appropriately the same age
Wiki User
∙ 8y ago
Wiki User
∙ 10y agoUmm I don't know really sorry
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What two things make a fossil an index fossil?
hiii
What is a tropites fossil?
A tropites fossil is a fossil of a tropites. A tropites is a genus of coiled ammonite. They only existed for about 20 million years, which makes it a good index fossil.
To compare the relative ages of fossils scientists sometimes use an easily recognized species called?
To compare the relative ages of fossils, scientists use an early recognized species called an index fossil. An index fossil must have existed for a short period time and must have covered a wide geographical range.
Which characteristics of a fossil would you make it useful as an index fossil in determining the relative age of widely separated rock layers?
C). a narrow time range and a wide geographic range
Which fossil would most likely make the best index fossil?
A good index fossil is one of an organism that rapidly evolves and is widespread throughout a geologic time period or periods. This makes it useful in determining the age of the rock formation in which it is contained.
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 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 fossils organisms that lived a short period of time called?
They are called index fossils.
What two things make a fossil an index fossil?
hiii
What 3 requirements do index fossils have?
To be an index fossil, it must be widespread, commonly found (sometimes in groups) and have a short life span for which it lived. If a fossil meets all three of these requirements, it is considered an index fossil.
What is the index fossil of the Cambrian?
Trilobite
Fossil used to compare the relative ages of fossils?
index fossils
Which New York State index fossil may have been present in a rock layer that is missing due to the unconformity?
The trilobite is the index fossil
A fossil that is used to date surrounding rock layers is?
This is called an index fossil.
What is the fossil called that geologists use to determine rock ages?
Index Fossil
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 characteristics must a fossil have to be useful as an index fossil?
An index fossil must be of a rapidly evolving organism that only existed for a specific period of time, is easily recognizable, is abundantly preserved, and was widespread geographically. Most index fossils are therefore of marine organisms.
