New Feathered Dinosaur Fossil Shows Flight Evolved More Than Once

A newly described feathered dinosaur from northeastern China is adding weight to the idea that flight evolved more than once among small bird-like dinosaurs, rather than being inherited from a single ancestor shared with birds. The tiny feathered dinosaur, named Norellraptor barsboldi, was described on September 29, 2026 in Nature Communications from a nearly complete skeleton that preserves part of its plumage. Catch up on more breakthroughs in our science coverage of fossil finds.

The complete skeleton measures 57 centimeters long, and analysis shows the animal was at least three years old when it died, as reported by Phys.org. The fossil was found in the Lower Cretaceous Jiufotang Formation in Liaoning province, in rock layers dated to between 145 million and 100 million years ago, and it was discovered by a local farmer before scientists studied it. The feathered dinosaur was described by Andrea Cau of the OPHIS Paleontological Museum in Italy and colleagues from China and Slovakia, who recognized it as a microraptorine: a small, four-winged predator and a close relative of birds.

Its curved teeth and claws fit a small generalist predator. According to Scott Hartman, a vertebrate paleontologist at the University of Wisconsin-Madison who was not involved in the study, the animal probably ate early mammals, lizards, amphibians and juvenile dinosaurs. It "wouldn't have been attacking any large dinosaurs," he said, because "that would be like mosquitoes attacking battleships."

Meet the Feathered Dinosaur With Four Wings

Microraptorines were small, meat-eating dinosaurs weighing around a kilogram, with long feathers on their forelimbs and hindlimbs that gave them the look of having four wings. This feathered dinosaur joins hundreds of specimens found in northeastern China, making microraptorines one of the best-represented groups of winged predators in the fossil record. As members of Paraves, the group that also contains birds, microraptorines sit right beside the origin of avian flight: close relatives of birds, but not their ancestors.

The new fossil shows long flight-related plumage on the forelimbs and tail, while other parts of the body carried straight, simple feathers. That mix of feather types, frozen in a single animal, gives researchers a rare look at how a feathered dinosaur assembled its aerial toolkit piece by piece.

Why This Fossil Suggests Flight Evolved More Than Once

To test how flight-related anatomy developed, the team mapped 194 anatomical changes across the microraptorine family tree and compared them with the lineage leading to birds. They found that 30 percent of those changes also appeared in the bird lineage, including wing feathers, hook-shaped toe bones and a longer forearm bone than upper-arm bone. But the two groups acquired the shared traits in a different sequence: in microraptorines, for instance, the finger bones of the hand shortened early, while the fusion of wrist and hand bones came later, according to a report by Sci.News.

That scrambled order is the key finding. Because the shared features appeared in a different sequence in each group, they "could not be considered the expression of a shared developmental regime," the researchers write: a sign that different evolutionary pressures shaped how the feathered dinosaur and birds each built their flight apparatus. According to Michael Pittman, a palaeobiologist at the Chinese University of Hong Kong, the findings support the idea that flight evolved "multiple times among feathered dinosaurs, including at least once among microraptorines and at least once among birds," as reported by Nature on October 2, 2026.

Other scientists welcomed the result. According to Neil Gostling, an evolutionary developmental biologist at the University of Southampton, most of the evolutionary changes in this lineage were not shared with its avian cousins, showing that many species "were exploring all of the avenues open to them." For comparison, Archaeopteryx, the famous feathered fossil from the Late Jurassic around 150 million years ago, sits on the bird side of the split: a reminder of just how many branches of the family tree were experimenting with feathers at the time.

What Comes Next for the Flight Story

There is an important caveat: the study does not show that this feathered dinosaur could actually fly, and the team did not test its flight performance. What the fossil offers instead is the clearest view yet of how flight-related anatomy was assembled over time in a non-avian dinosaur. Further fossil and bone-growth evidence will be needed to test how widespread the pattern was among bird-like dinosaurs, the researchers note.

For now, the discovery redraws a story many textbooks told as a single straight line from dinosaurs to birds. If microraptors built their own version of flight independently, the origin of avian flight looks less like one lucky breakthrough and more like evolution running the same experiment in parallel, and this feathered dinosaur is the newest evidence that the experiment ran more than once. Read about another fossil that turned out not to be what scientists first thought.