RE: Alamosaurus&T-rex

["Tracy Ford" <tlford@ix.netcom.com>]

   Yes, but there are problems. The "T. rex" (I use quotes on that because
there is some debate on whether the fragmentary remains belong to that genus
and species) is from the McRae Formation in south central New Mexico;
fossils of _Torosaurus_ have also been recovered from this very localized
unit, as have fragments assigned to _Alamosaurus_.  Most _Alamosaurus_
remains in New Mexico, however, all come from the San Juan Basin in
northwestern new Mexico, from the Kirtland Formation; big theropod material
from the same formation has usually been assigned to _Albertosaurus_ and/or
_Daspletosaurus_ (with new material being prepped and studied presently);
some teeth from the formation have been referred to cf. _Tyrannosaurus_, but
teeth aren't much to go on.  There is no really good record as yet
confirming that _Tyrannosaurus_ and _Alamosaurus_ coexisted.

Not documented yet, but there may be an Alamosaurus and T. rex found
together in the North Horn Formation of Utah. I've seen some teeth, not real
convincing, but not un-convincing either.
Tracy