Re: Tyrannosaurs, dwarf, early, and otherwise...

[TWILLIAMS@canr1.cag.uconn.edu]

> _Stokesosaurus_ (a Late Jurassic form) has been
>referred to Tyrannosauridae or Tyrannosauroidea, and is even older still;
>its placement here, however, remains uncertain.


In a recent JVP article, Chure and Madsen (1998) present a strong case for 
referring a theropod braincase from the Morrison Formation (Late Jurassic) 
to the Tyrannosauridae.  Their case for referring this braincase (UUVP 2455) 
to the species _Stokesosaurus clevelandi_ is weaker.  Before the description 
of the braincase, _Stokesosaurus_ had been included in the Tyrannosauridae 
based on pelvic characters.  These pelvic characters alone do not seem very 
convincing for including _Stokesosaurus_ in the Tyrannosauridae.  

This "_Stokesosaurus_" basicranium (incomplete, but well-preserved) comes 
from the Cleveland-Lloyd Quarry of Utah.  This is a silly question, I know, 
but can anyone tell me if this site is the same as Dinosaur National 
Monument?


Tim