HomeScienceRare 99-million-year-old dinosaur tail with feathers found preserved in amber

Rare 99-million-year-old dinosaur tail with feathers found preserved in amber

High-tech imaging revealed eight small vertebrae, still attached. Surrounding them were soft feathers, their beauty and three-dimensional detail preserved.

May 21, 2025 / 20:21 IST
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The underside of the preserved tail shows lighter feathers, signs of decay, and a nearby ant. (Image: Royal Saskatchewan Museum/ RSM/ R.C. McKellar)
The underside of the preserved tail shows lighter feathers, signs of decay, and a nearby ant. (Image: Royal Saskatchewan Museum/ RSM/ R.C. McKellar)

It began with what appeared to be a rather gemlike thing. But within that amber lay a tale from 99 million years past. What appeared to be a fragment of plant was, in reality, a dinosaur's feathered tail—trapped forever in golden resin.

A Hidden Treasure from Myanmar's Fossil-Rich Region

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Palaeontologist Lida Xing noticed the potential of the specimen first. It was sold as amber containing ancient plant material. However, when inspected more closely, something much more thrilling was discovered. The amber was from Kachin State, Myanmar—a place famous for Cretaceous-era fossils.

High-tech imaging revealed eight small vertebrae, still attached. Surrounding them were soft feathers, their beauty and three-dimensional detail preserved. The tail was from a young dinosaur from the group called the coelurosaurs. Ryan McKellar, study co-author, confirmed the validity of the discovery. The feathers and bone were not merely attached to each other but frozen in place as part of a single animal.