A duck-billed herbivorous dinosaur roamed the ancient and remote river plains of Patagonia in southern Chile some 72 million years ago, a new study revealed on Friday.
Scientists have dubbed the dinosaur Gonkoken nanoi and say it weighed up to a metric ton and could grow to 4 meters in length according to the study published in Science Advances.
"At first, we thought it was from the same group as other South American hadrosaurs, but as the study progressed, we realized that it was something unprecedented," said Jhonathan Alarcon, the main author of the study. " Gonkoken nanoi is not an advanced duck-billed dinosaur, but rather an older transitional duck-billed lineage: an evolutionary link to advanced forms," said Alexander Vargas, another study author.
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