It is currently known to include two species: C. saharicus and C. iguidensis, which were among the larger theropods, nearly as large as or even larger than Tyrannosaurus, Giganotosaurus and Spinosaurus.
Coñécense dúas especies: C. saharicus e C. iguidensis, que están entre os meirandes terápodos, chegando a ter o mesmo tamaño ou aínda maior que o Tyrannosaurus, Giganotosaurus e o espinosauro.