Pronunciation: /ðə ˌpeɪliəˈzoʊɪk/
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
A1 The Paleozoic era was a long time ago.
A2 In the Paleozoic period, many new species of marine life evolved.
B1 Scientists study fossils from the Paleozoic to learn about ancient ecosystems.
B2 The Paleozoic era is divided into several periods, including the Cambrian and the Permian.
C1 During the Paleozoic era, the supercontinent Pangaea formed.
C2 The Paleozoic era saw the rise of complex life forms such as early reptiles and amphibians.
formal The Paleozoic era is known for the diversification of life forms and the emergence of complex organisms.
informal Back in the Paleozoic days, life was just starting to get interesting.
slang The Paleozoic era was when all the cool creatures first showed up.
figurative Exploring the Paleozoic era is like stepping into a time machine and witnessing the birth of life on Earth.
the Paleozoics
more Paleozoic
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is being the Paleozoic
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Paleozoic
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the Paleozoic