Amargasuchus

Amargasuchus is an extinct genus of notosuchian crocodylomorph from the Barremian to Aptian La Amarga Formation of Argentina. Amargasuchus is only known from a single specimen, a partial maxilla of small size described in 1988. It was originally assigned to the family Trematochampsidae, but this clade has since been abandoned. Today, Amargasuchus is associated with either the clade Pepesuchinae or Itasuchidae, which are nearly identical in some studies. Amargasuchus inhabited a terrestrial paleoenvironment that existed during the Early Cretaceous in the Neuquén basin and was characterized by a system of braided rivers, lakes, and alluvial plains. Sauropod, abelisauroid, and stegosaurian dinosaurs have also been found existing in the Neuquén basin at this time.