Ключевые слова: age, ancient, archeology, artifact, background, copy space, crust, crustaceans, day, discovery, earth, epoch, excavation, exploration, formation, fossil, fossilized, fossils, geology, history, layers, life, marine, minerals, national, natural, ocean, origin, paleontology, pattern, prehistoric, preserved, relic, remains, research, residue, rock, science, seabed, sediment, shells, skeletons, specimen, stone, strata, study, texture, time, unearthed,