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Jam's Germs on Instagram: "This is a mud dragon, a tiny invertebrate that spends its life burrowing through marine sediment and sand grains. . Mud dragons are scientifically called Kinorhyncha, which translates to “movable snout,” referring to the retractable head that helps them crawl through dense sediment and fine sand. . This one was about 0.3 mm long and quite active on my slide. Present-day species range between 0.1 and 1 millimeter, but fossils from over 500 million years ago show ancient