Ключевые слова: ammonite, ammonitida, ancient, animal, animal skeleton, cephalopod, circle, closeup, energy, environment, evolution, extinct, fossil, fossilization, fuel, gas, geology, jurassic, leaf, macro, mineral, natural disaster, nature, nautilus, obsolete, oil, old, paleontology, pattern, petrified wood, prehistoric era, refinery, remote, renewable, rock, science, snail, stone, swirl, textured, tree,