Hummingbird-sized dinosaur found preserved in amber

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Scientists have discovered a new species of bird-like dinosaur from a skull trapped in amber.

The new species may represent the smallest Mesozoic dinosaur reported to date, they say.

Researchers describe a tiny, bird-like skull discovered in approximately 99-million-year-old amber from northern Burma.

According to the findings published in the Nature journal, the skull of the specimen is only 7.1 mm in length, indicating the dinosaur was similar in size to the bee hummingbird – the smallest living bird.

“Its unique anatomical features point to one of the smallest and most ancient birds ever found.”

Researchers have named the animal Oculudentavis khaungraae.

Oculudentavis means “eye tooth bird”, reflecting notable features that give insights into the animal’s lifestyle.

Its skull is dominated by a large eye socket that is similar to a lizard’s eye.

The eye socket has a narrow opening and only lets in a small amount of light.

An artist's impression of Oculudentavis
An artist’s impression of Oculudentavis (Han Zhixin/PA)

The lower and upper jaws had a large number of sharp teeth, and the authors estimate each jaw would have had 29–30 teeth in total.

Despite its small size, this suggests the dinosaur was a predator and probably fed on small arthropods or invertebrates.

Prof Schmitz said: “No other group of living birds features species with similarly small crania in adults.

“This discovery shows us that we have only a small glimpse of what tiny vertebrates looked like in the age of the dinosaurs.”

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