The snake-like lizards of the Brachymeles genus began with four legs, lost them about 62 million years ago, and then 20 million years later regained them to deal with a wetter climate
Source:
https://www.newscientist.com/article/2259415-lizards-that-lost-their-legs-re-evolved-them-as-the-climate-got-wetter/?utm_campaign=RSS%7CNSNS&utm_source=NSNS&utm_medium=RSS&utm_content=home