Did people cause the Quaternary Megafauna Extinction? End Ordovician (444 million in years past; mya) Later Devonian (360 mya) Stop Permian (250 mya) Avoid Triassic (200 mya) – we error which since skills you to murdered off of the dinosaurs. However in facts, these were murdered of at the end of this new Cretaceous period [...]