Good day!So there is not a possibility that T. rex evolved from North American tyrannosaurines like Daspletosaurus torosus? Is it already "proven" fact that T. rex firstly emerged in northeastern part of Asia some 70 - 68 million years ago and shares a direct common ancestor with Tarbosaurus bataar and Zhuchengtyrannus magnus (or even represents an evolutionary descendant of one of these species)? Could this be the case also for other species of Lancian fauna? And is it possible that many _Tyrannosauridae indet._ fossil finds from northeastern Asia (like those of Kakanut Formation and some Chinese formations) could belong to the ancestral Asian (sub)species of T. rex? Thank you in advance! Tom
Thomas R. Holtz, Jr.
Email:Âtholtz@umd.eduÂÂÂÂÂÂÂÂ Phone: 301-405-4084
Principal Lecturer, Vertebrate Paleontology
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Dept. of Geology, University of Maryland
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Mailing Address:ÂÂÂÂÂÂÂ Thomas R. Holtz, Jr.
ÂÂÂÂÂÂÂ ÂÂÂÂÂÂÂ ÂÂÂÂÂÂÂ Department of Geology
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