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Re: T-J Extinction event article (more media errors?)



In a message dated 5/11/01 5:09:35 PM EST, david.marjanovic@gmx.at writes:

<< This is an example how the use of paraphyletic taxa can mislead. "Both" 
have
 living descendants, so they aren't extinct, even though no actual members of
 the actual paraphyletic groups survive. >>

This is not misleading; but it may be confusing because the paraphyletic 
groups under discussion have not been adequately defined. Define a 
paraphyletic group as the difference between an  inclusive clade and one or 
more of its included clades and there's no confusion.