Sacisaurus (referred to in Portuguese as sacissauro) is a genus of dinosauriform (a relative to basal dinosaurs) that lived in the south of Brazil 220 million years ago, in the Triassic period Caturrita Formation. The scientific name refers to the city where the Sacisaurus was found, Agudo in the Rio Grande do Sul state and to Saci, a famous one-legged elf from Brazilian mythology, because the fossil skeleton has been found missing a leg. It was discovered in the geopark of Paleorrota.