Tinier than the teeniest bird, older than T-Rex and perfectly preserved for eternity: scientists have identified a 100-million-year-old flying dinosaur encased in amber that may be the smallest yet discovered.
The skull of Oculudentavis khaungraae was found in a globule of amber in Myanmar, offering researchers a startlingly clear view of its features.
"When I first saw it I was blown away," said Jingmai O'Connor, a paleontologist from the Chinese Academy of Sciences and lead author of the study published in Nature on Wednesday.
"It's pretty exquisitely preserved and really weird looking, with its unique scleral ring (eye bones) and large number of teeth," she told AFP.
The preserved skull is just 7.1 millimetres (less than one-third of an inch) long, likely making it the smallest dinosaur yet discovered. It would have been smaller than the smallest bird alive today, the bee hummingbird.
The team even refer among themselves to the specimen as "Teenie Weenie", O'Connor said.
Despite its miniscule size, researchers believe it hunted insects, using its sharp teeth and large eyes to home in on prey.
Unlike fossils encased in rock, amber specimens still retain their soft tissue, showing scientists their original colour and morphology.
As to whether Teenie is a bird or a dinosaur, O'Connor said the lines were blurry.
"We think it's a bird -- the skull has a shape that only occurs in birds and some dinosaurs," she said, "However there are no skull characteristics that define birds therefore it could be a dinosaur or even something else."
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