HELP ME….VERY EASY 60 points…if a scientist found a rock layer that contained an index fossil that we know dates to 25 million years ago, what does this tell us about the age of the rock?


HELP ME....VERY EASY 60 points...if a schoolman root a shake layer that contained an index fossil that we perceive dates to 25 darling years ago, what does this utter us about the age of the shake?