 "Proterosuchus" and the therocephalian "Moschorhinus" were the largest carnivores in the ecosystem at the time, and soon after the extinction "Moschorhinus" declined and went extinct while "Proterosuchus" thrived.The most common tetrapod in "Proterosuchus"'s environment was the herbivorous dicynodont "Lystrosaurus".The environment was hot, semi-arid and experienced droughts.