Fossil pyritized ammonite, Ordovician Period, Ryajan, Russia

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Keywords: ammonite, ancient, animal, background, chambered, chambers, closeup, coil, color, copy, creation, evolution, exterior, extinct, fossil, geology, gold, golden, interior, iron, isolated, life, macro, mineral, nacre, natural, nature, object, ordovician, paleontology, pattern, period, pyrites, pyritized, replacement, rock, sea, space, spiral, stone, white