Imagine you are looking at an outcrop of shale that has several identifiable fossils in it. One species is known to have lived from 544 to 505 million years ago and another is known to have lived between 520 and 248 million years ago. What can you say about the age of your shale that contains fossils of both?

Fossils can be defined as the preserved remains and traces of ancient flora and fauna that were buried millions of years ago. These are found only in the sedimentary rock types as they are good rocks for the preservation of fossils.

In the given condition, there is an outcrop, where various species of fossils are found, of which one species ranges from 544 to 505 million years and the other has an age range of about 520 to 248 million years. So, the age of the rock shale comprising both this two fossils must have an age range of about 544 to 248 million years.

answer called a epicycle;