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