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. 2023 Apr 12;290(1996):20230530. doi: 10.1098/rspb.2023.0530

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Published by the Royal Society under the terms of the Creative Commons Attribution License http://creativecommons.org/licenses/by/4.0/, which permits unrestricted use, provided the original author and source are credited.

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Figure 3. — Spectral tuning evolution of the SWS2 pigment since the origins of monotremes and crocodilians (bold lineages). The predicted value for the ancestor of Amniota is indicated by tilde (∼) [40].