The dinosaur nicknamed the Hell Chicken is thought to have been a specialized fruit eater during the late Cretaceous period, based on analysis of its skull and jaw.
This is Infernogallus jamesi, a species discovered 15 years ago in the formation of Hell Creek, North America. It would be one of the very first animal species adapted to consume the fruits, an evolutionary novelty that began to spread in the vegetal realm right during the Cretaceous The article It was discovered the first dinosaur "fruitful" seems to be the first on Galileo.