The Trilobites Were Alive During What Era

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Trilobites: Superstar Fossils! | McClung Museum of Natural History

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The colorful world of the trilobites | Earth Archives

When did trilobites become extinct? (are they alive today?)

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In Earth’s Greatest Extinction, Land Animals Began Dying Off Long

Cambrian communities

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Trilobites... So Many Trilobites… - Darwin's Door

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