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Unformatted text preview: layer D this may have been because of possible erosion or it may have never deposited at all. That is very likely that it may have existed at one time, but the erosion from may have destroyed it. Although some scientists may argue that fossils are not a good way to determine the age of some organisms I feel as though it is a good way because the fossil is found in that layer of strata so therefore it should be placed in that time frame. The fossils that where found were between the Paleozoic Era and the Mesozoic Era because of this knowledge the scientist can determine that the fossils that were found are probably between 65 million years to 251 million years old. This allows scientists to see how the Earth has changed or evolved over the different Eras....
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- Spring '11