Turtles are roughly between archosaurs and protosuchosaurs, so they may belong to archosaurs or archosauromorphs.
According to Wang From the phylogenetic tree of Zhuo and Crawford et al., it can be seen that the turtles and archosaurs are sister groups. The clade containing the two was named archosaurs by Crawford et al. as clade "A" (Japanese translation) It is a synonym of the main dragon-like species, loosely translated in Chinese as the main dragon-like subclass). Crawford et al. believe that Turtles may be descendants of a clade of the archosaur-like basal group. And Wang By measuring and analyzing the genomes of green sea turtles and Chinese soft-shell turtles, Zhuo et al. determined that the time when the direct ancestors of the turtles and the archosaurs separated was roughly from the Ward Period to the Olenic Period in the Permian (about 249 million years ago). ).
