List of dinosaurs named . Bonaparte also discovered or described a number of archosaurs and primitive birds ( such as `` Iberomesornis '' ) , and assisted with the study of other dinosaurs , like the `` Giganotosaurus carolinii '' .
He also discovered or described a number of archosaurs and primitive birds ( such as `` Iberomesornis '' ) and has assisted with the study of other dinosaurs , like `` Giganotosaurus '' .