Geologists think that any other formation holding the same set of index fossils has the same age as any formation carrying the same set of index fossils. So it's true.
The strata in each location were probably deposited at the same time if the same index fossil is discovered in various locations. As a result, it is possible to correlate fossil sites across broad discontinuous areas and estimate the relative age of unknown fossils using the idea of faunal succession.
Periods of geological time are identified using index fossils. These fossils are "frequently encountered, widely distributed fossils that are limited in time span," according to the definition. If an index fossil is discovered in a particular layer, one can estimate the layer's age. The geological periods are established using index fossils.
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Correct Question:
A formation containing a set of index fossils is assumed by geologist to be the same age as any other formation containing the same set of index fossils. State true or false.