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Re: What, if anything, is _Apatosaurus_ (Was: Ceratops (was RE: Pterosaur diversity (was: Re: Waimanu)))

To: mike@miketaylor.org.uk
Subject: Re: What, if anything, is _Apatosaurus_ (Was: Ceratops (was RE: Pterosaur diversity (was: Re: Waimanu)))
From: Nick Pharris <npharris@umich.edu>
Date: Tue, 06 Jun 2006 09:42:09 -0400
Cc: mickey_mortimer111@msn.com, dinosaur@usc.edu
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Quoting Mike Taylor <mike@miketaylor.org.uk>:

> Using Wilson and Upchurch's criteria, very few sauropod genera
> would be valid.

Really?  What are the criteria that you allude to exactly?  That each
valid genus should be diagnosed by at least one autapomorphy?  I would
think that most sauropod genera have that.

No, that each valid genus should still be diagnosable by the characters originally used to diagnose it.

--
Nick Pharris
Department of Linguistics
University of Michigan

"Creativity is the sudden cessation of stupidity."
    --Edwin H. Land

References:
- RE: Ceratops (was RE: Pterosaur diversity (was: Re: Waimanu))
  - From: mike@miketaylor.org.uk (Mike Taylor)
- RE: Ceratops (was RE: Pterosaur diversity (was: Re: Waimanu))
  - From: Michael Mortimer <mickey_mortimer111@msn.com>
- What, if anything, is _Apatosaurus_ (Was: Ceratops (was RE: Pterosaur diversity (was: Re: Waimanu)))
  - From: mike@miketaylor.org.uk (Mike Taylor)

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