The Discovery
In northeastern China, paleontologists have identified a new species of small, bird-like predatory dinosaur named Norellraptor barsboldi. Uncovered in the Lower Cretaceous Jiufotang Formation of Liaoning, the animal lived over 100 million years ago. Research regarding the specimen was published in the journal Nature Communications.
The genus name honors Mark Norell, an American Museum of Natural History paleontologist recognized for his research on feathered dinosaurs. The species name honors the Mongolian paleontologist Rinchen Barsbold. The precise date when the fossil was unearthed is Not specified in the source; please check the official notice.
What Scientists Found
The remarkably preserved fossil features a complete skeleton measuring 22 inches long along with preserved portions of its plumage. Bone analysis indicates the dinosaur was at least 3 years old when it died. Key physical findings include:
- Preserved feathers found near the animal's forelimb, hindlimb, and tail areas.
- Forelimb evidence indicating the presence of asymmetrical flight feathers.
- Classification within microraptorines, a group known for a unique combination of dinosaur and bird traits, including some species with four wing-like surfaces.
Researchers noted that the preservation condition of the plumage places limits on what can be determined about the feathers' original size and shape.
Why It Matters
The discovery provides critical insight into how flight-related features developed in prehistoric life. When comparing anatomical shifts across microraptorine evolution with the lineage leading to birds, researchers found that roughly 30% of the changes identified in microraptorines also occurred in birds. However, these traits appeared in a different order between the two lineages.
This finding challenges previous theories that birds and microraptorines inherited the same flight apparatus from a common ancestor or developed it through an identical process. Instead, it indicates that similar flight adaptations likely evolved independently under different evolutionary pressures. Scientists concluded that further studies of bone growth and additional fossil discoveries will be needed to confirm if this evolutionary pattern was widespread among other bird-like dinosaurs.
Source: dinosaur fossil discovery - BingNews · Published October 02, 2026