How much adjustment is excessive? This is where the sensible approach fails evolutionary scientists. They start with the presuppositions that the world is ancient and that evolution happened. Then the data are interpreted within this worldview — sometimes even resorting to amazing extremes rather than abandon a faulty theory.
When fossils do not fit the time frame, then the time frame is pushed back. This happens much more frequently than evolutionists want to admit.
You can read the rest of "Further expansion of evolutionary fossil time ranges", here.We are commonly challenged to explain the fossil order worked out by evolutionary scientists. Fossils are, of course, crucial to the evolutionary story; their sequences and placement in the evolutionary time scale are fundamental to the evolutionists’ grand scheme. However, outcrops with fossils are usually widely scattered and further fossil collecting commonly brings surprises, such as the expansion of the ranges of fossils either up or down within the geological column. Since I last reported on fossil range expansions in 2009, many new reports have been published.