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Re: Tyrannosaurus bataar eggs
>Hmm, what is the relationship of this formation to the one in
>which Alectrosaurus was found?
>[If I remember my names correctly, Alectrosaurus is the earliest
>known tyrannosaurid - being Lower Cretaceous].
Well, Alectrosaurus olseni IS the earliest known tyrannosaurid, but is
definately of Late Cretaceous age (maybe Coniacian, maybe Santonian, maybe
I'm not sure of the stratigraphic relationships between the Iren Dabasu and
Gaugao Formations - interbasinal correlations of Asia is getting better,
but still has a long way to go.
Thomas R. Holtz, Jr.
Vertebrate Paleontologist in Exile Phone: 703-648-5280
U.S. Geological Survey FAX: 703-648-5420
Branch of Paleontology & Stratigraphy
MS 970 National Center
Reston, VA 22092