Periodically you see theropod material offered for sale from Patagonia and to a collector that's awesome.  Typically its specimens obtained before the embargo laws went into affect from Argentina.   My experience in looking at what has been offered is that it's often mis-identified as to locality, age and species.   Sellers put commonly known dinosaurs identification tags to their specimen like Carnotaurus with complete disregard to the actual age and locality of where that dinosaur was describe