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Q: These are plant and animal remains used to define and identify geologic periods?
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What are the conditions needed for an index fossil to form?

An index fossil is formed from the remains of an animal that evolved and lived for a precisely defined (and hopefully short) period of time, they are used to define and identify geologic periods. The best index fossils are wide spread (globally) and numerous (commonly found). They frequently (but not always) bottom dwelling or burrowing organisms with hard parts to their body structure because such organisms are most likely to regularly leave remains that can be fossilized.


What does the effect of great geologic changes on plant and animal life?

You have your grammar wrong.. :) That is " What is the effect of great geologic changes on plant and animal life" Welcome :)


What are the remains of prehistoric plants and animals called?

FOSSILS ! comes from latin word Fossus which means "having been dug up". Anything that was once a living organism from a past geologic time is considered a fossil.


You found an animal print in your yard you cannot identify?

Please identify the animal print


What are the fosslis?

The remains of an animal. -------------------------- Fossils are the remains of a dead plant or animal that have been preserved for a long time.


What feed on dead plant and animal remains?

Detritivores feed on dead plant and animal remains.


Indentify the state animal?

identify the state animal


What is an a extinct animal from a long time ago expect dinosaurs?

There are so many that it's hard to name just a few (there are 6 geologic time periods that existed before the Triassic after all). A few are dimetrodon, arthropleura, the trilobite, meganeura, gorgonops, and ctenorhachis.


Are fossil dead or alive?

No. At one time yes. It must be very old. Definition of fossil per www.dictionary.com: any remains, impression, or trace of a living thing of a former geologic age, as a skeleton, footprint, etc.


What animal can identify you by your breath?

Lion


Animal remains that are buried and decay can become?

When it is like that, the remains decompose and form into dirt.


Are animal remains used in paving roads?

No they are not.