terrestrial ecosystems were dominated by a diverse and constantly evolving fauna

The name "ischigualastensis" comes from the Ischigualasto Formation in Argentina

Its forelimbs were long and muscular

Su tamaño y estructura sugieren que era un depredador dominante en su ecosistema

It was not a fast runner

Maip macrothorax Variant:Primed terrestrial ecosystems were dominated byMaip macrothorax is a species of theropod dinosaur belonging to the Megaraptoridae family that inhabited the region of present day Argentine Patagonia during the Late Cretaceous, approximately 70 million years ago. This predator stands out for being one of the largest known megaraptors, with an estimated length of between 9 and 10 meters and a weight that could reach 5 tons. The name "Maip" comes from Aonikenk (Tehuelche) mythology, where it