A fragment of fossilized skin collected from the Richards Spur limestone cave system in Oklahoma, the United States, is at least 21 million years older than previously described skin fossils. The fossilized skin of Captorhinus aguti. Image credit: Mooney et al., doi: 10.1016/j.cub.2023.12.008. The newly-described fossilized skin belonged to Captorhinus aguti, a species of early reptile that lived during the Permian period, around 289 million years...
