[RobRoy]

>>No, they are not the same thing. Alligator is not a species designation, nor is crocodile. The species of both alive today are not the same ones alive 200 million years ago. They speciated.<<

Prove it.

[CarolinaGuitarman]

"Prove it."

I can provide evidence. Proof is for math and whiskey. The claim was that they had not changed much in 200 million years. They had, as the species that existed then are not the same as exist now.

"You do?"

I never claimed to know what the mutation rates were, as the other poster did.