How do scientist obtain information about extinct species?

Paleontology is the study of fossils, which are the remnants of "hard anatomy" such as bones and teeth. Fossils are analyzed and classified to learn more about morphology (form and structure) of a species and interpretation is done to fill in the gaps that we would have no way of knowing with an extinct species. There are around 9 different fields of paleontology with different areas of expertise. Palentology works by incorporating knowledge from Biology, geology, ecology, anthropology, Archaeology, and computer sciences.