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Re: twist-thumb

Ken Kinman wrote:

    Someone mentioned the twist-thumb synapomorphy.  Is it a synapomorphy
of Dinosauria or something more or less inclusive?  Segnosaurs apparently
lack it, so assume there are a lot of other dinosaurs that lack it as well.

The only "twist-thumb" I know of is a synapomorphy of the Prosauropoda.


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