In case you are seeing this message, it means we're getting difficulties loading external sources on our Web site. Tuataras superficially resemble lizards even so the lineages diverged while in the Triassic interval. There's 1 residing species, Sphenodon punctatus. The skull has two openings (fenestrae) on both aspect along with https://directivepublications.org/the-journal-of-anatomy/