Oldest Fossilized Butthole Found in 290-Million-Year-Old Reptile : ScienceAlert
Once, long ago, a little reptile going about its business plopped itself down in the mud before getting up and carrying on with its day. Nearly 300 million years later, that brief rest has yielded the world’s earliest known fossilized imprint of reptile skin, complete with scales and – remarkably – what scientists interpret as