There were some ceratosaurs (Ceratosauria, or “horned reptiles”)—theropods that arose during the Triassic period and grew in number during the Jurassic period—in the Cretaceous period. One is from a group of unusual ceratosaurs, called the Abelisauridae, a family (or clade) of ceratosaurian theropod dinosaurs. The Abelisaurids thrived during the Cretaceous period on the ancient southern supercontinent of Gondwana (now South America). One example is the up to 30-foot-(9-meter-) long, strange-looking, horned dinosaur called a Carnotaurus (“meat bull”).