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Question 11 of 50

Fossils that only occur in rock layers of a particular age are called:

A. index fossils
B. trilobites
C. absolute dating fossils
D. disconformity fossils


Sagot :

Final answer:

Index fossils are distinct fossils used to determine the ages of rock layers due to their wide distribution and short geological range.


Explanation:

Index fossils are fossils of organisms that lived over a wide area and for a relatively short period of time, making them useful for determining the ages of rock layers. These fossils are easily recognizable, abundant, and have a short geologic range, aiding in precise dating of sedimentary rocks. The presence of index fossils in rock layers allows scientists to infer the approximate age of those rocks.


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