Translation:Why and how did the dinosaurs disappear?
I have mixed feelings about this. Yes, your word order is a much more common collocation and is the preferred English phrasing.
However, we learners need to demonstrate that we understand the individual French words, so we should mirror the French word order. Also, if French speakers prefer the opposite order, we should be doing it their way so we don't sound like idiots if we talk or write to French people. Its aller et venir all over again.