Chilesaurus # was discovered by a geologist in southern Chile . Late Jurassic ##saurus was a herbivore , prompting experts to rethink the idea that vegetarian dinosaurs were close relatives of birds . Fossils reveal unusual traits from various dinosaur groups , including short arms , a long neck , small head and wedge - shaped teeth . it has been liked to a platypus because of its mixture of traits .
Chilesaurus diegosuarezi was discovered by a child in southern Chile . Late Jurassic dinosaur was a herbivore , causing experts to rethink the idea that vegetarian theropods were close relatives of birds . Fossils reveal unusual features from various dinosaur groups , including short arms , a long neck , small head and leaf-shaped teeth . Dinosaur has been liked to a platypus because of its mixture of traits .