Fujianvenator prodigiosus – The oldest bird-like dinosaur to date from the Jurassic period. Ann. Reg. Phys. Lett. 61, 268 (2016)

One hundred and fifty million years ago, a young, huge, bird-like dinosaur became trapped in a swamp in what is now southeastern China and died. Its fossilized remains, unearthed in 2022 and named Fujianvenator prodigiosus, show it to be one of the earliest bird-like dinosaurs to date from the Jurassic period. In the paper published today, the researchers describe their discovery.

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Source: A new avialan theropod from an emerging Jurassic terrestrial fauna

Discovery of a Late-Jurassic Bird-like Dinosaur is a Manifestation of Anatomy and Lifestyle in the Group of Birds

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“This is really a weird animal within the group of birds,” says Mark Loewen, a palaeontologist at the University of Utah in Salt Lake City, who was not involved in the discovery.

But it didn’t have many modifications that would contribute to flight. It had short shoulder blade and specialized fingers that are for grabbing. The bird’s hind legs are hyper-elongated, which means the lower leg bone is twice as long as the thigh bone. Bhart-Anjan says that such long legs indicate a very skilled runner like the roadrunner.

There was a stroke of luck about the discovery of the dinosaur. There has been no dinosaurs found before near the site where the fossil was discovered. An example of late-Jurassic bird-like dinosaurs are rare due to their hollow bones being less well preserved. Fossilization needs ideal conditions such as a lack of oxygen to prevent decay, provided by lakes or swamps.

He says there are many things left to be discovered. “We’ve only scratched the surface of the anatomical and lifestyle diversity of these animals.”