noun
a proper noun referring to a specific geological period in Earth's history, known for the diversification of life forms
article
a determiner used before a noun to specify or limit it
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The Cambrian period is known for the rapid diversification of marine life.
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Have you heard about all the cool creatures that lived during the Cambrian?
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The Cambrian was like the ultimate marine life party!
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Exploring the Cambrian period is like taking a journey back in time to the birth of complex life forms.