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Rates of morphological evolution in crocodilians; warmer colours denote faster rates. Rates are quite uniform through time and across clades, but the fastest occurs on a recent branch (22–27 Ma) leading to Gavialis, when adaptations to piscivory, and atavistic reversals, occurred relatively simultaneously. This branch thus generates a gharial morphotype highly similar to thoracosaurs, but these iterations are widely separated in time. See [8, figure S7] for precise branch values.
