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



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