The brontosaurus is no longer a real dinosaur because WHY?

There are a set of rules for giving dinosaurs their scientific names, and one of those is that the first name given to a dinosaur is the one that is used. Since the name Apatosaurus was used before Brontosaurus, that is the one that should be used and Brontosaurus is therefore not the right name to call it. There are a set of rules for giving dinosaurs their scientific names, and one of those is that the first name given to a dinosaur is the one that is used. Since the name Apatosaurus was used before Brontosaurus, that is the one that should be used and Brontosaurus is therefore not the right name to call it.