Learning from the Fossil Record is a title carefully chosen for it conveys multiple concepts. Paleontologists, geologists, biologists, and others use the fossil record to learn about the past history of the Earth. Using this knowledge, we have gained an understanding of geologic processes that continue today, biodiversity past and present, species origination and extinction, past and present climates, oceans, and atmospheres among others. In fact, we have been able to piece together the fascinating story of our dynamic Earth for the past 3.5 billion years.