Um, explain to me YOUR definition of speciation. I know what I know about it already, but I want to know how you feel about it.
Additionally, by my logic, I believe that life came from a few -- by my definition, each species had its origin at the same time, and each species, well...speciated, from that point until now. Natural selection and random mutation produced the variation of species that we have today.
And what evidence do you suppose that each group we see present today is derived from only one group (e.g., mammalia, protozoa, etc.)? If all the fossils show the same dates genetically, then wouldn't it be possible that these various species were separate to begin with? Given that these fossils probably weren't in a controlled environment, that is.
And I continue to wonder where the initial ideas for dates arose from. I understand how the dating process works, but it also assumes that the earth came into existence 4.5 billion years ago; all dating methods go off of this premise. If the standard was younger (or older), would you guys have to readjust the time frames according? Just a thought.
Maybe some of you guys have a good way to answer this question.
|the kid