An international team of paleontologists from Stony Brook University, the Royal Ontario Museum, and the North Dakota Geological Survey has identified a unique new dinosaur species named Infernogallus jamesi. Known informally as the "Hell Chicken," this creature lived during the Cretaceous period, roughly 145 to 66 million years ago. Its fossils, which include a nearly complete skull and partial skeleton, were recovered from the Hell Creek Formation across Montana, North Dakota, South Dakota, and Wyoming.
The Discovery
Belonging to a group of feathered, toothless dinosaurs called caenagnathids, Infernogallus was a bipedal animal about the size of a turkey, weighing roughly 12 kilograms (25 pounds) as a mature adult. Despite sharing its habitat with large carnivores like T. rex and giant herbivores like Triceratops, this small animal carved out a distinct ecological role by targeting early flowering plants and their fruit.
What Scientists Found
By conducting CT scans on the fossilized skull, researchers led by Dr. Greg Funston examined the jaw mechanics of Infernogallus. They uncovered several unique physical traits:
- Downward-arching palatal bones on the roof of the mouth that positioned chewing muscles in a front-to-back orientation.
- A back-and-forth sliding jaw movement, allowing the creature to mash stone fruit and separate the flesh from seeds.
- A specialized muscle structure similar to modern fruit-eating birds, such as the Vulturine Parrot, as well as humans.
Why It Matters
This species is the first dinosaur known to have specialized in eating fruit. Although it descended from meat-eating precursors, Infernogallus evolved specific jaw adaptations as flowering plants began replacing cone-bearing vegetation. The discovery suggests that caenagnathids evolved alongside the radiation of fruiting plants, indicating that these dinosaurs may have played an important, previously unrecognized role as ancient seed dispersers.
Source: dinosaur fossil discovery - BingNews · Published October 28, 2026 · Photo by Blond Fox on Unsplash
