[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index][Subject Index][Author Index]
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.