While the fossil record is incomplete, it still helps lend evidence to the Theory of Evolution.
Fossils are relatively rare because of all of the elements that have to fall into place before an organism can become a fossil.
Your goal is to study the smooth, parallel layers of rock to learn how the land built up over geologic time.
Now imagine that you come upon a formation like this: What do you think of it? How can you make any conclusions about rock layers that make such a crazy arrangement?
Back in the lab, we can study the fossil more closely.As a member, you'll also get unlimited access to over 55,000 lessons in math, English, science, history, and more.Plus, get practice tests, quizzes, and personalized coaching to help you succeed.Fossilization usually can only happen to hard parts of the organism's body, so that is another obstacle in the way of making fossils.It is possible that some traces of organisms, like footprints, can become imprint fossils if they are filled with sediments, but these are rare. That organism normally needs to be near an area with a lot of water, like a lake or river.