Notosuchus (/noʊtəˈsjuːkəs/; 'southern crocodile') is an extinct genus of South American notosuchian crocodylomorph. It was terrestrial, living approximately 85 million years ago in the Coniacian or Santonian stages of the Late Cretaceous. Notosuchus was relatively small, reaching 1.5 m (4.9 ft) in length and a weight of 36 kg (79 lb). Remains have been found in the Bajo de la Carpa Formation in Patagonia, Argentina. First named in 1896, Notosuchus was the first known notosuchian. The type species is N. terrestris. A second species, N. lepidus, was named in 1957.