>>100043023There's more than one relationship between evolution and extinction.
There are extinction events, which are caused by some sort of devastation. After an extinction event, there is a burst of evolution because of all the now empty niches. IIRC, both of these can happen over the course of a geological time scale.
Also evolution sometimes leads to an extinction of sorts after the descendants are so different from their ancestors they wouldn't be able to breed if they existed at the same time and place.
>>100042895Avian dinosaurs are still around. They are called "birds".
