noun
a geological era that lasted from about 541 to 252 million years ago, characterized by the development of marine life, the first appearance of land plants, and the formation of continents as we know them today
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The Paleozoic era is known for the diversification of life forms and the emergence of complex organisms.
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Back in the Paleozoic days, life was just starting to get interesting.
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The Paleozoic era was when all the cool creatures first showed up.
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Exploring the Paleozoic era is like stepping into a time machine and witnessing the birth of life on Earth.