Plesions and plesiomorphons (not the same)

Curtis Clark jcclark-lists at EARTHLINK.NET
Mon Mar 14 17:57:19 CST 2005

on 2005-03-14 15:02 Ken Kinman wrote:
> Curtis, Oh my goodness no!!!   ALL of my plesions are assumed to be
> holophyletic (usually fossil genera).  Plesions are NOT supposed to
> be paraphyletic, although some workers have done so incorrectly, and
> Kluge has thus coined a new term (plesiomorphon) for what you are
> apparently talking about.

Thanks for the correction; I was going on Wiley's use of the term, and
had never followed up on it because I had never needed it in my own
research. So what, then, is a plesion by your definition? And where did
the term originate?

I'm more an more thinking about the usefulness of a paraphylocode. :-)

Curtis Clark        
Web Coordinator, Cal Poly Pomona                 +1 909 979 6371
Professor, Biological Sciences                   +1 909 869 4062

More information about the Taxacom mailing list