→ Paleontology (British: palaeontology) is the study of prehistoric life. It includes the study of fossils to determine organisms’ evolution and interactions with each other and their environments.
→ Archeology (British: archaeology) is the study of human society, primarily through the recovery and analysis of the material culture and environmental data that they have left behind, which includes artifacts, architecture, biofacts and cultural landscapes (the archaeological record).
Here are the definitions from Wikipedia for anyone who may not already know. I see a lot of people confuse the two fields, so hopefully this may help. (background photo used for graphic is by kikikentucky)