Ключевые слова: ammonite, ancient, animal, background, brown, collect, collector, cretaceous, curled, earth, eon, formation, fossile, fossilisation, fossilized, geology, history, horizontal, house, jurassic, mineral, mineralogy, mollusc, nautilus, ocean, old, pattern, rock, sea, seafloor, sediment, snail, spiral, stone, structure, white, winded, winding,