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Re: Ah ha! That's where therizinosaurs came from
On Aug 12, 2011, at 2:14 PM, Thomas R. Holtz, Jr. wrote:
> We may not be able to specify actual ancetors (i.e., the very populations who
> represent the actual gametes gave rise
> to a later lineage), but we can sometimes specify ancestral STATES. (I.e., it
> would be perverse in the extreme to specify that the
> ancestor of all tetrapods was volant, or that the ancestor of all
> gnathostomes was terrestrial).
Right, right, of course, by using ancestral state analysis. This is what Alan
Turner et al. did on the Mahakala paper, in determining that small body size
arose at the base of Paraves, before aerodynamic behaviors. He used
optimization analysis, correct? He writes that he used TNT v1.0, a method
developed by Goloboff (2003). He writes that this method is related to Wagner
parsimony and Sankoff optimization.
So I wonder why some enterprising fellow out there hasn't tested the
neoflightless hypothesis for non-avian maniraptorans with ancestral state
analysis? They could do it with the old TWG cladogram and the new Xiaotingia
cladogram and see how it shakes out.