The fossil record provides evidence of evolution. The story the fossils tell is one of change. Creatures existed in the past that are no longer with us. Sequential changes are found in many fossils showing the change of certain features over time from a common ancestor, as in the case of the horse.
(A)
If multicelled organisms were indeed found to have evolved before single-celled organisms, then the theory of evolution would be rejected. A good scientific theory always allows for the possibility of rejection. The fact that we have not found such a case in countless examinations of the fossil record strengthens the case for evolutionary theory.
(B)
The fossil record supports this prediction ―multicelled organisms are found in layers of earth millions of years after the first appearance of single-celled organisms. Note that the possibility always remains that the opposite could be found.
(C)
Apart from demonstrating that evolution did occur, the fossil record also provides tests of the predictions made from evolutionary theory. For example, the theory predicts that single-celled organisms evolved before multicelled organisms.
