The rare fossils from the age of the dinosaurs look a lot like modern-day bird wings. Finding things trapped in amber is far from a rare occurrence: lizards, bugs, flowers and more are regularly found encased in hardened lumps of the tree resin. But when a group of researchers digging through amber mined in Burma uncovered a sample with a pair of tiny bird-like wings frozen inside, they knew they had something special. At around 99 million years old, these wings are some of the most pristine fossilized feathers ever found.

Source: 99-Million-Year-Old Bird Wings Found Encased in Amber | Smart News | Smithsonian