The paleoenvironment of the Ischigualasto Formation (where it was found) was a volcanically active floodplain covered by forests with strong seasonal rainfall. The climate was moist and warm, with seasonal variations. Vegetation consisted of ferns ("Cladophlebis"), horsetails, and giant conifers ("Protojuniperoxylon"). These plants formed lowland forests along the banks of rivers. "Herrerasaurus" remains appear to have been the most common among the carnivores of the Ischigualasto Formation.