Ключевые слова: ammonite, ammonoid, ancient, antique, background, cephalopod, copy space, crustacean, earth, embedded, excavation, form, formation, fossil, fossilization, geological, geology, ground, hard, historic, history, invertebrate, layers, life, like, limestone, marine, mementos, minerals, natural, nature, paleontological, paleontology, prehistoric, preserved, record, rock, rocks, science, sediment, sedimentary, shell, snail, spiral, stone, strata, structural, time, well,