Fossil Discoveries Disrupt Evolutionary Timescales "Conventional geology assumes that different rock layers represent different periods of time. Paleontologists assess the age of fossilized creatures by the rock layers in which they are found. So, a fossil found in a lower rock layer is considered to have lived in a much earlier time than one found in a higher ("younger") stratum."
"But frequently, fossils of the same creatures are discovered in rock layers far above or below the layers in which they were initially found. Very often, they are discovered in almost exactly the same form in both places, and they even look just like their living counterparts. That forces evolutionary scientists to constantly reassess the time periods assigned to fossilized life forms."
