Bellany995
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The _______ the time period during which a species lived and the _______ the distribution of its fossils, the better an index fossil the species is. shorter; narrower shorter; wider longer; narrower longer; wider



Answer :

Answer:

Option (2)

Explanation:

Index fossils are defined as those fossils that had a wide geographical distribution and they were present for a comparatively shorter period of time. They had great significance in the field of paleontology. It helped in the construction of geological periods that are commonly used today. It basically helped in forming the geological time scale. The age of the rocks in which these fossils were embedded is easily determined by using radioactive dating techniques.

Thus, the index fossils have a shorter time period and wider geographical distribution of fossils.

Hence, the correct answer is option (2).

Tundexi

The index fossils have a shorter time period and wider geographical distribution of fossils.

What is an Index fossils?

An Index fossils refers to class of fossils that had a wide geographical distribution and they were present for a comparatively shorter period of time.

They helped in the construction of geological periods that are commonly used today.

Thus, the index fossils have a shorter time period and wider geographical distribution of fossils.

Therefore. the Option B is correct.

Read more about Index fossils

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