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Four dinosaur species found in Chilean valley for first time: study

The fossils were found in Cerro Guido, in southern Chile's Las Chinas valley near the border with Argentina, and taken to a laboratory in 2021. The researchers said they belong to dinosaurs that have not previously been identified in the area.

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"One of the characteristics that allowed us to identify with great confidence that they belong to megaratorids are, first of all, that the teeth are very curved towards the back," said Jared Amudeo, a researcher with the University of Chile, in a statement. They also identified two specimens of Unenlagiinae, closely related to velociraptors and which have a "novel evolutionary character, which would indicate that this is a new species of unenlagine or perhaps a representative of a different clade (group)," said Amudeo.