Cretaceous Bird Fossil Suggests Similar Digestive Features As Modern Birds
Researchers read a 120 - million - year - old fossilise bird from China discovered a wad , football game - shaped cluster of fish bones nearby . Many birds form these so - called pellets out of indigestible food items ( like osseous tissue ) in their digestive nerve pathway , and then honk them . This find is the Earth ’s oldest raspberry pellet . And according to a newCurrent Biologystudy , it suggests that bird in the Early Cretaceous already had a digestive system resembling that of forward-looking birds ....