Eli5: If the rainforest of Borneo is 130 million years old, why aren’t any surviving dinosaur species found there?

Question

If old rainforest ecosystems like these could withstand extinction events (ie. Asteroid impact), wouldnt the fauna living there survive too?

In: 575

Answer 1

Simplest answer, you can wipe out all or most of a forest, only to have it spring up from seed and grow back fully within a few centuries, if you wipe out most or all of the fauna, it’s gone.

Imagine some of the fauna is still there, not everything has to be a dinosaur, so small reptiles and insects.
Also there’s the birds, flying descendent of some line of dinosaurs.