Not exactly, but on the other hand the chordata are 'septaphyletic'. If the
ancestors are unrelated, then it is because some of their ancestors have
become extinct. The adjective is useful...I guess, but is jargon....
john
----- Original Message -----
From: Steven Bissell <[log in to unmask]>
To: <[log in to unmask]>
Sent: Saturday, October 27, 2001 7:54 AM
Subject: Re: Leopold's Moral Maxim and Balance of nature, was: Catastrophic
shifts in ecosystems - good or bad?
> One more question to John Foster. Do you actually think that the term
> "Phylum" means all the species in that group share a common ancestor? Have
> you ever encountered the term "biphyletic" in your studies?
> sb
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