Ключевые слова: 65 million years, ammonite, anatomy, ancient, animal, brown, cataclysm, cephalopod, close up, closeup, coleoids, cretaceous period, detail, dinosaurs, division, evolution, family, fossil, fossilized, geology, jurassic, layer, link, macro, marine, meteor, mollusk, natural, nature, nautilus, old, paleontology, pattern, prehistoric, ribbed, rings, rock, science, sea, seashell, sediment, shape, shell, snail, spiral, stone, swimming, swirl, texture, white,