Two years ago, a scientist in Australia has a really lucky day. Tired after driving for several hours, he stopped to stretch his legs and -- boom! -- he tripped over a 100-million-year-old pterosaur jaw. (Pterosaurs were flying reptiles that lived at the same time as dinosaurs. The Science Museum has one hanging in our main lobby.) The jaw bone was encased in rock; after two years of careful preparation, the bone is finally free and can be studied by scientists.
(OK, so it wasn't a technically a dinosaur, and it was actually off to the side of the road, but c'mon, how often do I get to reference my favorite bad song of the Seventies?)