Although Argentina is well-known for abelisaur fossils (35 species have been discovered here so far), the overwhelming majority of these were discovered in Patagonia, in the country’s south.

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The Llukalkan lived in the same area and time period as another species of Furileusaurian abelisaur (stiff-backed lizard), the Viavenator exxoni, only a few million years before the end of the age ...