Re: Valid Synapomorphies or not?

[Steven Mahon <floridamahon@yahoo.com>]

--- Nicholas Gardner <ratites637@hotmail.com> wrote:
> Also found in Compsognathus, but this doesn't really
> affect the use of it as 
> a troodontid synapomorphy.

Interesting
 
> Hm... needs quantified.  And you mean "fenestra",
> not "fenatra".  And is the 
> fenestra elongated or enlarged?

Fenestra & elongated
 
> The calcanea are not lost in troodontids, they are
> fused to the astragalus 
> to form the astragalocalcaneum. This fusion is also
> in Bagaraatan and 
> Zupaysaurus.  It is not present in Sinovenator.

ok
 
> How many? "Numerous" is rather vague.  Norell et al.
> 2000 use "teeth few 
> (<100) [0], or numerous [1]".  Therefore, the number
> of teeth is greater 
> than 100 in troodontids apparently.  Uncertainty is
> present as Makovicky et 
> al. 2003 regard Byronosaurus as having ~64. 
> Pelecanimimus (a basal 
> ornithomimosaur) has 220 teeth.

that was probably it.
 
> What is "Coeluria"?

Compsognathus + Coelurus. Sorry, I should have
clarified that!

        Thanks for all the help,
           Steven Mahon

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