Re: Size of Theropods

["Nicholas J. Pharris" <pharrinj@PLU.edu>]

On Mon, 22 Jan 1996, Peter Mark wrote:

> Just a follow up to Scott Horton's post - it would seem that in the past
> there was at least a tendency, perhaps not scientifically rigorous, to lump
> large theropods into carnosauria and small ones into coelurosauria. Now that
> coelurosaurs have got pretty big with the inclusion of tyrannosaurs, just
> what is an acceptable definition of the differences between the two?
> Graeme Worth
> 
> 

Carnosauria includes Allosaurus and its closest relatives, the families 
Sinraptoridae, Allosauridae, Carcharodontosauridae, and possibly the more 
primitive  Monolophosauridae.  As you can see, its membership has been 
severely limited, and it is now a monophyletic clade.

Glad to help.


Nick Pharris
Pacific Lutheran University
Tacoma, WA 98447
(206)535-8204
PharriNJ@PLU.edu