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Date: Fri, 24 Aug 2001 09:53:07 -0400
From: Kevin de Queiroz <Dequeiroz.Kevin@NMNH.SI.EDU>
To: tmk@dinosauricon.com, david.marjanovic@gmx.at
Cc: phylocode@ouvaxa.cats.ohiou.edu, mike@tecc.co.uk
Subject: Re: Apomorphy-based definitions
Gautheir and I discuss this issue to some degree in a paper forthcoming in = _New Perspectives on the Origin and Early Evolution of Birds_ (Yale = University Press). Kevin de Queiroz Division of Amphibians & Reptiles National Museum of Natural History Smithsonian Institution Washington, DC 20560-0162 Phone: (202) 357-2212 FAX: (202) 786-2979 E-mail: dequeiroz.kevin@nmnh.si.edu >>> "T. Mike Keesey" <tmk@dinosauricon.com> - 8/23/01 3:00 PM >>> Now there IS another glaring problem. Characters do not, typically, suddenly emerge fully-formed, but, rather, develop in tiny increments. So defining a certain trait should be EXTREMELY specific, and even then it may be prone to complications.