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RE: Sauroposeidon



Right you are. You'd think I'd read my own *^%*^%#@ notes before spouting off 
at the mouth.  But no...

  --Toby White

On Wednesday, November 03, 1999 2:52 PM, Thomas R. Holtz, Jr. 
[SMTP:tholtz@geol.umd.edu] wrote:
> > From: owner-dinosaur@usc.edu [mailto:owner-dinosaur@usc.edu]On Behalf Of
> > Toby White
> >
> >
> > At 110My, wouldn't this be the wrong age (early Albian) for a
> > Titanosaur in N.
> > America?  Yet its too recent to be a Brachiosaur.  Very odd.
>
> It is most assuredly not too recent for a brachiosaur, as at least SOME of
> the _Astrodon_/_Pleurocoelus_ material (contemporaneous with
> "Sauroposeidon") seems to be brachiosaurid.  Furthermore, there is now
> evidence of titanosaurs in North America by the mid-Cretaceous.
>
> Of course, there is the whole question now of what other than _Brachiosaurus
> altithorax_ and _B. (sometimes _Giraffatitan_) brancai_ IS a brachiosaurid.
> It may be that "Brachiosauridae" in the old more inclusive sense includes a
> paraphyletic grade of titanosaur outgroups.
>
>               Thomas R. Holtz, Jr.
>               Vertebrate Paleontologist
> Department of Geology         Director, Earth, Life & Time Program
> University of Maryland                College Park Scholars
>               College Park, MD  20742
> http://www.geol.umd.edu/~tholtz/tholtz.htm
> http://www.geol.umd.edu/~jmerck/eltsite
> Phone:        301-405-4084    Email:  tholtz@geol.umd.edu
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