Simplified evolutionary tree showing the fish-tetrapod transition (IMAGE)

Harvard University, Department of Organismic and Evolutionary Biology

Simplified evolutionary tree showing the fish-tetrapod transition

Caption

Animal silhouette colors represent rates of anatomical evolution for different body regions whereas background colors indicate groups undergoing stabilizing vs directional evolution towards new body plans.

Credit

Credit: Original artwork created by Tiago R. Simões and Stephanie E. Pierce

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With proper citation

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