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Date: Tue, 14 Sep 2004 12:05:03 -0500
From: [unknown]
To: "Thomas R. Holtz, Jr." <tholtz@geol.umd.edu>
Cc: David Marjanovic <david.marjanovic@gmx.at>, PML <phylocode@ouvaxa.cats.ohiou.edu>
Subject: RE: Apomorphy-based clades; was Re: Panstems
Umm... both Wolsan and I have come up with ways to name BOTH the crow= n and the total groups of all life without using apomorphies. My definitions ar= e in the Paris abstract volume. Wolsan's are arguably better. Quoting "Thomas R. Holtz, Jr." <tholtz@geol.umd.edu>: > But there's the issue of if you are dealing with crown Biota, or t= he > panstem Biota (i.e., including the ultra primitive ancestors of liv= ing > things, now extinct)... >=20 > =09=09Thomas R. Holtz, Jr. > =09=09Vertebrate Paleontologist > Department of Geology=09=09Director, Earth, Life & Time Program > University of Maryland=09=09College Park Scholars > =09Mailing Address: > =09=09Building 237, Room 1117 > =09=09College Park, MD 20742 >=20 > http://www.geol.umd.edu/~tholtz/ > http://www.geol.umd.edu/~jmerck/eltsite > Phone:=09301-405-4084=09Email:=09tholtz@geol.umd.edu > Fax (Geol): 301-314-9661=09Fax (CPS-ELT): 301-405-0796 >=20 >=20 > > -----Original Message----- > > From: David Marjanovic [mailto:david.marjanovic@gmx.at] > > Sent: Tuesday, September 14, 2004 12:42 PM > > To: PML > > Subject: Re: Apomorphy-based clades; was Re: Panstems > > > > > > Mike Taylor found out how to define the clade of all life without > > mentioning > > an apomorphy: > > > > > How about: > > > > > > "The least recent common ancestor of _T. rex_ and > > > _E. coli_, and all its descendants" > > > > > > ? :-) > > > > Hey cool. You've got it. :-) > > >=20 >=20