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Fossils reveal wondrous dinosaur diversity just before mass extinction

Among the fossils are the first recorded theropods from Chilean Patagonia.

artist-impression-dinosaurs-of-patagonia-feathered-in-foreground-large-megaraptor-in-background-birds-flying-top-left-fluvial-floodplain-delta
A time-averaged artist’s interpretation of Patagonia during the Late Cretaceous. The animals pictured include non-avian dinosaurs, birds and other vertebrates that have been discovered in the fossil record of the region. They are: ornithurine birds (flying and walking on the ground), Stegouros (armored dinosaur), Orretherium (mammal), Yaminuechelys (turtle), a megaraptorid (large carnivore), unenlagiines (pair of carnivores), and enantiornithine birds (in foreground). Credit: Mauricio Alvarez and Gabriel Diaz.