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Paradoxides Series
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Paradoxides Series

geology
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History

Paradoxides Series, rocks deposited during the Middle Cambrian Period in western Europe and Scandinavia and in eastern North America (the Middle Cambrian Period lasted from 521 million to 499 million years ago). The Paradoxides Series is characterized by the fossil occurrence of trilobites of the family Paradoxididae and other trilobites, such as the genera Agnostus and Eodiscus.

This article was most recently revised and updated by Richard Pallardy.