Climate change retroactively kills another thing.
Via Phys.org:
Imagine dolphins disappearing from the world’s oceans as a result of prolonged climate change and slower evolution. As shocking and unlikely as such an event might be, it happened in the past to a group of marine animals: the ichthyosaurs.
These “fish-reptiles” were an iconic group of marine predators from the dinosaur era – and the ichthyosaurs underwent the most profound modifications to become fast, efficient swimmers. They evolved a shark-like body shape, their limbs transformed into muscular paddles, and they had some of the largest eyes in the entire animal kingdom, presumably to seek out and hunt prey in deep or turbid marine settings.
About a hundred ichthyosaur species are currently known, covering a 157m-year reign in the ancient oceans that ended around 90m years ago.