Body size evolution of Cambrian-Ordovician trilobites in Laurentia (B), East Gondwana (C), West Gondwana (D), Baltica and Avalonia (E) (IMAGE)

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Body size evolution of Cambrian-Ordovician trilobites in Laurentia (B), East Gondwana (C), West Gondwana (D), Baltica and Avalonia (E)

Caption

Body size evolution of Cambrian-Ordovician trilobites in Laurentia (B), East Gondwana (C), West Gondwana (D), Baltica and Avalonia (E). Three episodes of change in body size during Cambrian Age 4, the Guzhangian and middle Tremadocian are marked 1, 2 and 3. 

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Image by the research group

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