ancient archaeological fossil prints

ancient fossil archaeological discovery prehistoric prints paleontology fossilized imprints extinct species historical artifact geological exploration natural history preserved remains museum exhibit life dinosaur era fossil excavation earth sciences carbon dating paleobiology evolutionary stratigraphy bones educational geology research paleoecology archeological significance evidence preservation rare fossils creatures earth#39aph39#s study layers ecosystems paleontologist#39aph39#s find organisms earth identification geology biology tracks sedimentary rock scientific life forms time paleontological past remains