Science   Second Try
posted by Eve .
I'll repost the question I posted about thirty five minutes ago. It's still unanswered.
Hello. (= I can't find the answer to this question:
What are the five major classes of Chordates?
The following question is:
Using the list made in the previous question, number the Chordate Classes in the order in which each of them evolved.

I know very little about biology. It might help if we had the list from the previous question. However, here is a site that may help you get stared.
(Broken Link Removed)
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