gig·a·not·o·saur·us 
(jĭg′ə-nŏt′ə-sôrəs)
(jĭg′ə-nŏt′ə-sôrəs)n.
A very large carnivorous theropod dinosaur of the genus Giganotosaurus of the Cretaceous Period, having a massive skull and large teeth.
[New Latin Giganotosaurus, genus name : Greek gigās, giant + notos, south + sauros, lizard.]