 Reaching up to four meters in length, baurusuchids were the apex predators of the South American Late Cretaceous ecosystems.They were surpassed only by large theropods, however, these are very rare in the Adamantina Formation and represented by isolated and fragmentary teeth mostly attributed to abelisaurids and carcharodontosaurids, and isolated megaraptorid and unenlagiine vertebrae.The sphagesaurid material recovered in the abdominal cavity of "Aplestosuchus" was considered more likely derived from predation, not scavenging, given its size relation to the prey, as sphagesaurids were usually much smaller than about one fourth of derived baurusuchids.