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        <div>I&nbsp;present to you a trilobite exhibit from the paleontological collection of the Natural History Museum.</div><div><br></div><div>Trilobites appeared about 550 to 530 million years ago.</div><div><br></div><div>The last trilobites probably went extinct during a cataclysm 252 million years ago.</div><div><br></div><div>These were exclusively marine animals.</div><div><br></div><div>Trilobites ranged in size from 1 millimeter to 90 centimeters.</div><div><br></div><div><br></div><div>They could curl up into a ball and thus protect themselves when attacked.</div><div><br></div><div>Their main enemies were large cephalopods, as well as predatory fish, predatory arthropods, etc.</div><div><br></div><div><br></div><div><br></div><div>Rich paleontological material was preserved after them.</div><div><br></div><div>Their fossils can be found all over the world.</div><div><br></div>
    

Trilobite

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