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Deltadromeus (was RE: Size of *Neoceratodus africanus* and/or *N. tuberculatus*)

> From: owner-DINOSAUR@usc.edu [mailto:owner-DINOSAUR@usc.edu] 
> On Behalf Of Tim Williams
> Raptorial Talon <raptorialtalon@gmail.com> wrote:
> >, and I guess the larger noasaurs as well.
> > 
> > All are generally medium to large (20-50 ft) predators with no such 
> > profound specializations as spinosaurs, indicating - again, 
> obviously 
> > - that something weird was going on with the latter.
> It's interesting you should mention the "larger noasaurs", 
> because the very large _Deltadromeus_ (which has been 
> regarded as a noasaur) might also have been somewhat "weird" 
> - although this would be a different kind of "weirdness" to 
> spinosaurids.  

Carrano & Sampson (2008. The Phylogeny of Ceratosauria (Dinosauria:
Theropoda). JSysPaleo 6:183-236) found Deltadromeus to be a basal ceratosaur
rather than a noasaurid. If so, we would not expect it to to have any
particularly Masiakasaurus-like skull features.

Thomas R. Holtz, Jr.
Email: tholtz@umd.edu   Phone: 301-405-4084
Office: Centreville 1216                        
Senior Lecturer, Vertebrate Paleontology
Dept. of Geology, University of Maryland
Fax: 301-314-9661               

Faculty Director, Earth, Life & Time Program, College Park Scholars
Faculty Director, Science & Global Change Program, College Park Scholars
Fax: 301-405-0796

Mailing Address:        Thomas R. Holtz, Jr.
                        Department of Geology
                        Building 237, Room 1117
                        University of Maryland
                        College Park, MD 20742 USA