According to new research, American alligators (Alligator mississippiensis) have remained virtually untouched by evolutionary change for at least 8 million years — up to 6 million years older than previously thought. American alligator (Alligator mississippiensis). Image credit: Gareth Rasberry / CC BY-SA 3.0. “If we could step back in time 8 million years, you’d basically see the same animal crawling around then as you would see today in...
