Cambrian and Ordovician trilobite body size (A) and their correlation to the inferred oxygen levels (B) and temperature (C) (IMAGE)

Chinese Academy of Sciences Headquarters

Cambrian and Ordovician trilobite body size (A) and their correlation to the inferred oxygen levels (B) and temperature (C)

Caption

Fig. 4: Cambrian and Ordovician trilobite body size (A) and their correlation to the inferred oxygen levels (B) and temperature (C). (B) Ocean redox conditions and widespread anoxic intervals, showing strong links between trilobite body size and marine redox changes, blue and purple indicate oxic and anoxic states, respectively. (C) Temperature curves are based on bulk-rock (purple line) and skeletal material (gray line) δ18O datasets.

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Image by the research group

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