66 million years ago, an asteroid smashed into the earth and called almost all of the Dinosaurs. ALMOST all, Not ALL. There are still over 10,000 species of birds around now that were around and technically were Dinosaurs, but have done a shit ton of evolving over the last 66 million years. And then you have alligators. Which are basically smaller dinosaurs and haven’t really evolved at all in the last 100 million years outside of getting a little smaller.