The oldest known lepidosaur and origins of lepidosaur feeding adaptations.

ABSTRACT: The Lepidosauria is the most species-rich group of land-dwelling vertebrates. The group includes around 12,000 species of lizards and snakes (Squamata) and one species of Rhynchocephalia, the tuatara Sphenodon punctatus from New Zealand¹. Squamates owe their success to their generally small size, but also to their highly mobile skull that enables them to manipulate large prey. These key features of lizard and snake skulls are not seen in Sphenodon, which makes it important to understand the nature of their common ancestor. Lepidosaurs originated in the Triassic 252-201 million years ago, but confusion has arisen because of incomplete fossils, many of which are generalized lepidosauromorphs, neither squamates nor rhynchocephalians^2-5. Here we report a reasonably comple

SUBMITTER: Marke D 

PROVIDER: S-EPMC12629995 | biostudies-literature | 2025 Nov

REPOSITORIES: biostudies-literature