Alligators and crocodiles are some of the oldest and most successful predators on the planet. They date back to the time of the dinosaurs. “Proto-crocodiles” appeared in the Triassic and Jurassic period, although their legs were much different from modern crocs':
More modern-looking, “true” crocodiles appeared in the Cretaceous period, about 200 million years ago. Somehow -and no one’s sure why- crocodiles and alligators lived through what killed the dinosaurs and continue to flourish today.
Alligators and crocodiles have been on earth for about 150 million years. They do have similar simila characteristics, but are actually quite different.
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