Index fossils help scientists figure out the plants and animals that were alive in a certain time period. There are different types of index fossils that are used for different amounts of time.
index fossil are characterized by certain attributes ranging from.
.should be fast evolving
.should be geographically widespread
.they should be abundant
should be independent their environment.
should be readily preserved.
It must be distinct from other organisms.
It must have lived in a very wide geographic region
The four characteristics of a good index fossil are:
Trilobites were rapidly evolving and widespread organisms, making them ideal index fossils.
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.
An index fossil is organisms that is a signature for certain geographical eras. Index fossils are a charting of time that is used to describe other organisms found in that time era. The fossils were found in the stones that are determinations by carbon indexing and therefore are index fossils.
because they changed slowly through time(:
Tropites subbullatusMonotis subcircularis
they were index fossils because they were found everywhere, had distinct characteristics, and lived for a short period of time.
the parts are a match, but don't look the same . the background is not of poor record, and the traditional test methods are used
index 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.
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.
It is because the index fossils has better minds than the paleontologist.
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.
They are called index fossils, an aid to relative dating of rock.
They are called index 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)
Trilobites were rapidly evolving and widespread organisms, making them ideal index fossils.
Index fossils