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

Re: Therizinosauroid apomorphies



On Tue, 4 Apr 2000 Dinogeorge@aol.com wrote:

> In a message dated 4/4/00 5:57:08 PM EST, tmk@dinosauricon.com writes:
> 
> << TMK, Segnosauria has not been phylogenetically defined, whereas
>  Therizinosauria has. Thus, if using PT, Therizinosauria should be
>  preserved. >>
> 
> PT is only the latest fad in taxon definition. There is no reason it should 
> supersede priority in preservation of taxonomic names. Rather, PT should be 
> used to redefine older names that have not yet had the benefit of this kind 
> of definition.

Since Segnosauria hasn't been phylogenetically defined, there is no way to
show that it is truly a synonym of Therizinosauria, anyway. Segnosauria is
still open to phylogenetic definiton.

-- T. Michael Keesey .................................. <tmk@dinosauricon.com>
   My Worlds (including The Dinosauricon) ... <http://dinosauricon.com/keesey>
   AOL Instant Messenger ........................................ <Ric Blayze>