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Re: Recoded Aves eliminates polyphyly
I understood that Mickey's post was making a certain point (not sure I
would call it a joke), but ironically it convinced me even more that I am on
the right track. The evidence he provided just confirmed what I was already
suspecting---that caenagathiforms are closer to modern birds than
Archaeopteryx. I've repeatedly expressed my suspicions that enigmosauria
was not a clade, and if you give less weight to characters that are subject
to considerable convergent pressures, I think even a moderately "weighted"
parsimony analysis would show it is polyphyletic. If you want to know more
about "weighted" parsimony, you might try Mayr and Ashlock, 1991 (Principles
of Systematic Zoology), although I'm not sure if they use that exact phrase.
And according to a post by Mickey, Caudipteryx does have a convex
coracoid glenoid (so it satisfies the first criterion according to him).
And it's "semilunate" is enlarged and fused (and I noted that it and
Protarcheopteryx have modified the distinctive shape somewhat). That is why
I put semilunate in quotation marks. So I don't see how Caudipteryx fails
this definition on either criterion.
Thanks for the constructive criticism in any case. [Tim's peanuts, on
the other hand, give me indigestion].
-------- Ken :-)
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