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|Reconstruction of the Abelisaurus skull with original bones of the holotype. Scale = 10 cm|
Bonaparte & Novas, 1985
?Aucasaurus Coria, Chippe and Dingus, 2002
The first, and only, fossils discovered were several skull bones found in Argentina. Scientists put them back together in the lab to create a skull. The skull is similar to that of other members of its family. Like most abelisaurs, it is blunt and short in length, but tall in vertical height from a front view. Abelisaurus probably preyed on the large sauropod dinosaurs of the time, such as Amargasaurus, in packs. It may also have hunted smaller plant-eating dinosaurs, such as the small ornithopod Gasparinisaura.
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