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Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
(A) NS = Number of described lizard species, NSSC = Number of lizard species with documented TSD or sex chromosome system; (B) Relative abundance of different sex chromosome systems in lizards.