This fossilized butthole gives us a rare window into dinosaur sex
(World News Science)

The Psittacosaurus specimen, from Senckenberg Museum of Natural History. (Jakob Vinther, University of Bristol and Bob Nicholls/Paleocreations.com 2020/) Dinosaur fossils can be, for lack of a better term, rather bare-bones—particularly in their delicate, easily-destroyed nether regions, which can fall prey to the ravages of scavengers, or an explosive release of postmortem gas. But after working with a dinosaur specimen from the Senckenberg Natural History Museum in Germany, Jakob Vinther, a paleontologist at the University of Bristol, returned and realized that its private parts were unusually...