What is an endangered/ectinct species which exists or existed all over the world (Global)?

Question

the title is the question

Answer 1

dinosaurs?

Answer 2

It depends what you mean by all over the world. Perhaps the closest fits to what you are seeking are the great whales such as blue whale which roam very widely but are much rarer than previously; or the smallpox virus which was a widespread human disease and is now thought to be confined to a few closely controlled lab cultures.

Answer 3

Bigfoot aka yeti, sasquatch, Abominable Snowman,Am Fear Liath Mòr