Re: Coelurosauria

[Tim Williams <twilliams_alpha@hotmail.com>]

Jamie Stearns wrote:

> > Among the odder things in your cladogram, I'm interested why you placed-
> > Bahariasaurus/Deltadromeus in Tyrannosauroidea?
>
> It has an arctometatarsalian pes, and I had heard much about a possible 
> relationship to Dryptosaurus as you said.

The pes of _Deltadromeus_ is not arctometatarsalian; check out Fig 3K, L in 
Sereno et al. (1996).  The pes of _Dryptosaurus_ is possibly 
arctometatarsalian, based solely on the form of metatarsal IV (not part of 
the holotype, and the only known pedal bone assigned to _Dryptosaurus_; 
Carpenter et al., 1997).  The type specimen of _Bahariasaurus_ does not 
include pedal elements.

Cheers

Tim