[Right Wing Professor]

"tunicate and vertebrate genome relationships point to a common ancestor 550 million years ago" (paraphrased) do not have support

Now, Andrew, you really should know better. All you had to do was ask .

[AndrewC]

Well thank you very much, but I do not have an account to see the rest of the article you posted. Does the genome comparision provide a mechanism for determining the time of divergence from the hypothetical common ancestor or is it an assumption?