I understand your disquiet, but this is the reality. The ICZN has no power to do anything but recommend. It's great to have it there, but the truth is always that the nomenclature in actual use is determined by what people actually use â in fact, it's more than truth, it's tautology. So there is simply no value in stirring up confusion about Procheneosaurus, as there is zero chance of the global community switching away from Lambeosaurus to that name.
-- Mike.