RE: Glishades ericksoni, a new hadrosauroid from Montana

["Thomas R. Holtz, Jr." <tholtz@umd.edu>]

> From: owner-DINOSAUR@usc.edu [mailto:owner-DINOSAUR@usc.edu] 
> On Behalf Of Tim Williams
>
> Thomas R. Holtz, Jr. <tholtz@umd.edu> wrote:
> 
> > This is basically the situation that Prieto-Marquez
> > advocates: Hadrosauridae = Hadrosaurus + Saurolophus + 
> Lambeosaurus; 
> > Saurolophinae = Saurolophus > Lambeosaurus; and Lambeosaurinae = 
> > Lambeosaurus > Saurolophus. In his phylogeny, Hadrosaurus is a 
> > hadrosaurid but neither a saurolophine nor a lambeosaurine.
> 
> 
> This is fine.  Except that Prieto-Marquez also throws in 
> clade Saurolophidae, inside Hadrosauridae.  I don't quite see 
> the point of Saurolophidae - especially when Saurolophidae is 
> a clade inside Hadrosauridae.  I agree with Daniel that this 
> might cause a nomenclatural mess, for the exact reasons he gives.  

Particularly when the perfectly good "Euhadrosauria" is already in the
literature for the same clade as Saurolophus + Lambeosaurus.

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
http://www.geol.umd.edu/~tholtz/
Fax: 301-314-9661               

Faculty Director, Earth, Life & Time Program, College Park Scholars
http://www.geol.umd.edu/~jmerck/eltsite/
Faculty Director, Science & Global Change Program, College Park Scholars
http://www.geol.umd.edu/sgc
Fax: 301-314-9843

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