Evolutionists have long insisted that the main evidence for evolution is the fossil record. However this involves circular reasoning. That is, the fossil evidence that life has evolved from simple to complex forms over the geological ages depends on the geological ages of the specific rocks in which these fossils are found. The rocks, however, are assigned geologic ages based on the fossil accumulations. The fossils, in turn, are arranged on the basis of their assumed evolutionary relationships. The rocks are dated by the fossils and the fossils are dated by the rocks. Circular. The main evidence for evolution is based on the assumption of evolution.
A significant development of recent years has been that many evolutionary geologists are now also recognizing this problem. Dr R. Ronald West, at Kansas State University said: "Contrary to what most scientists write, the fossil record does not support the Darwinian theory of evolution because it is this theory (there are several) which we use to interpret the fossil record. By doing so, we are guilty of circular reasoning if we then say the fossil record supports this theory."
Since evolution always proceeds in the same way all over the world at the same time, index fossils representing a given stage of evolution are assumed to be dependable indicators of the geologic age in which they are found. This makes good sense and would obviously be the best way to determine relative geologic age. If, and only if we knew that evolution were true.