|Tyrannotitan chubutensis by atrox1|
|The unnamed Abelisaur by HodariNundu|
|Puertasaurus by randomdinos. This is a smaller(28m) version, but as i said the remains are so fragmentary tha we can't tell exactly how big the species was.|
There's still a lot to know about the southern continents in the late cretaceous, but as long as fe find an Abelisaur or Megaraptora in South america that lived after 90mya and was at least 10-11m i say that Giganotosaurs survived there, or at least lasted much longer than the other Carcharodontosaurs. But wether you believe it or not is up to you.
|Giganotosaurus sculpture by Sfoulkes|