Small, prickly dinosaur discovered in South America reveals an unknown lineage

Fossils of a small, prickly dinosaur recently discovered in South America may represent an entire lineage of armored dinosaurs previously unknown to science. 

The newly discovered species, Jakapil kaniukura, looks like a primitive relative of armored dinosaurs like Ankylosaurus or Stegosaurus, but it came from the Cretaceous, the last era of the dinosaurs, and lived between 97 million and 94 million years ago. That means a whole lineage of armored dinosaurs lived in the Southern Hemisphere but had gone completely undetected until now, paleontologists reported in a new study. 

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