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Relatively short rime span. To be an index fossil, a fossil organism must be easy to identify and many fossils of that organism must exist. You are using the 7th grade interactive reader...... Naughty naughty naughty
scaphite
* the organism must be common in rocks from most of the world *the organism must have lived for only a geologically short period of time( a few million years to a few hundred million years) *the organism must be easy to identify.(trilobites and ammonites are 2 kinds of organisms that are used as index fossils).
There are technically more than three traits and those traits are distinctive, widespread, abundant and limited in geologic time.
Speed Index is a system that is used by the American Quarter Horse Association to rate the performance of racehorses. Speed Index is calculated by averaging the fastest three winning times over the past three years.
Relatively short rime span. To be an index fossil, a fossil organism must be easy to identify and many fossils of that organism must exist. You are using the 7th grade interactive reader...... Naughty naughty naughty
Relatively short rime span. To be an index fossil, a fossil organism must be easy to identify and many fossils of that organism must exist. You are using the 7th grade interactive reader...... Naughty naughty naughty
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.
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.
scaphite
Relatively short rime span. To be an index fossil, a fossil organism must be easy to identify and many fossils of that organism must exist. You are using the 7th grade interactive reader...... Naughty naughty naughty
Index fossilsFossils of organisms that lived during a relatively short geologic time span.The three conditionsTo be an index fossil, a fossil organism must be found throughout the world. It must be easy to identify and many fossils of that organism must exist.-Haileybh"I hope it helped you!"
* the organism must be common in rocks from most of the world *the organism must have lived for only a geologically short period of time( a few million years to a few hundred million years) *the organism must be easy to identify.(trilobites and ammonites are 2 kinds of organisms that are used as index fossils).
* the organism must be common in rocks from most of the world *the organism must have lived for only a geologically short period of time( a few million years to a few hundred million years) *the organism must be easy to identify.(trilobites and ammonites are 2 kinds of organisms that are used as index fossils).
There are technically more than three traits and those traits are distinctive, widespread, abundant and limited in geologic time.
in order to keep alert to conditions in your zones you need to SEARCH three zones
three