Scientists have discovered a new four-winged dinosaur species, Jian changmaensis, in northwestern China, which may reveal the predator responsible for the crushed bird bones found in prehistoric sites. This find offers crucial insights into the evolutionary history of birds.

Scientists have discovered a new four-winged dinosaur species, Jian changmaensis, in northwestern China, which may reveal the predator responsible for the crushed bird bones found…

A new fossil discovery from northwestern China suggests a feathered, four-winged dinosaur may have preyed on ancient birds about 120 million years ago. The species, Jian…