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

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© 2023 The Authors.

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 1. — Shift in the rhodopsin retinal release rate at the origins of monotremes and crocodilians. (a) Rhodopsin retinal release (arbitrary units, a.u.) of the ancestral monotreme versus the ancestors of Mammalia and Theria. (b) Rhodopsin retinal release rate of crocodilian ancestor versus the ancestor of Archosauria. Asterisks denote rates plotted from new measurements (mean and s.d. of t_1/2 values calculated), with others from published data [21].