reptile sets speed record for dna change (disovery)

this lizard is often called a living fossil it is because the tuatara looks as if it hadn't changed in the 200 million years of that kind. but appearances can be quit deceiving.the tuatara is actually faster than its ancestored. this lizard 9,000 has developed to be 50% more quicker than the other ones. given the high rate of evolution, the stable morphology of the tuatara over ten of million years is very remarkable.