Figure 2 (IMAGE)

Harvard University, Department of Organismic and Evolutionary Biology

Figure 2

Caption

Fossil of the early sail-backed synapsid Dimetrodon, from 290 million years ago, one of the species investigated in the study.

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Photograph by Christina Byrd. Museum of Comparative Zoology, © President and Fellows of Harvard College.

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Permissions – Image may be reprinted outside of Harvard’s use, but only for non-commercial purposes under https://creativecommons.org/licenses/by-nc-sa/4.0/deed.en.

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