Re: A Pile of Questions

[Thomas_R_HOLTZ@umail.umd.edu (th81)]

>Maybe someone out there can help with one or more of these queries?
>1) The only species of Daspletosaurus I have listed is D. torosus. Is this
>still valid, or is it now a junior synonym of Gorgosaurus libratus?

If Tom Carr is correct, it is.  Otherwise, they are distinct.
>
>2) What are the currently accepted valid species of Albertosaurus?

Depends on who you ask (oooh! major committal statement from Holtz! :-))  It
ranges from just A. sarcophagus, to include A. arctunguis, to include A.
libratus, to even more.
>
>3) Ditto for Parasaurolophus?
>
>4) Ditto for Kritosaurus and Gryposaurus?

One Kritosaurus, G. notabilis and G. incurvimanus (and maybe another) for
Gryposaurus.
>
>5) Are Yangchuanosaurus shangyouensis and Y. magnus valid species or have
>they also been transferred to Sinraptor with Y. hepingensis?

They have not been transfered, but may be only one species themselves.
>
>6) Does anyone have any info on Edmontosaurus major, or the Nodosaurus
>species sternbergi, coeli or landerensis?

See a paper by Weishampel, Carpenter, and someone else (sorry, memory
failing) for some of these.  It was in JVP 15 (3).
>
>7) Are the Oldman and Judith River Formations of Alberta different
>formations and how? Does Dinosaur Provincial Park include either or both of
>these? I've seen references to various dinosaurs where different authors
>give one or the other formation, or just DPP.
>
First off, there is no more "Judith River Formation".  It is now the "Judith
River Group" (gone up a notch in stratigraphic hierarchy).  It contaiins the
Oldman, the Dinosaur Park, and one other formation.  If I remember
correctly, all three formations of the group are represented in DPP.

>8) Is there an updated (from The Dinosauria) concensus on the best
>classification of the hadrosaurs?

Consensus, no.  But my favorite version is found in Weishampel et al.s
reanalysis of Telmatosaurus (in Palaeontology a couple of years ago).
>
>9) Are there any skulls at all attributed to Hadrosaurus? If not, and if the
>skull is essential for hadrosaurid classification (hence the loss of
>Hadrosaurus to nomina dubium) why was the first specimen of Kritosaurus or
>Gryposaurus not also attributed to Hadrosaurus? If Hadrosaurus is to be
>nomina dubium, what do we now call the hadrosauridae and hadrosaurinae?

George can handle this one.

Thomas R. Holtz, Jr.
Vertebrate Paleontologist
Dept. of Geology
University of Maryland
College Park, MD  20742
Email:Thomas_R_HOLTZ@umail.umd.edu (th81)
Fax: 301-314-9661
Phone:301-405-4084