RE: Articles on Dilong and "a hobbit" in the 21. Century magazine

["Thomas R. Holtz, Jr." <tholtz@geol.umd.edu>]

> From: owner-dinosaur@usc.edu [mailto:owner-dinosaur@usc.edu]On Behalf Of K 
> and T Dykes
>
> <<1.) Is dilong thefinal proof for asiatic origin of tyrannosaurids?>>
>
> No.  Eotyrannus would get upset.  And so might Stokesosaurus from the
> Tithonian of North America, (should it qualify for at least affiliated
> membership), and a hip bone from the Kimmeridgian of Portugal found at
> Guimarota.  It was described as being close to Stokesaurus, but is smaller.
>
> Martin T & Krebs B (eds), (2000), Guimarota - A Jurassic Ecosystem, Verlag
> Dr Friedrich Pfeil, München.
>
> Oliver Rauhut introduces the dinos in Chapter 11: The dinosaur fauna from
> the Guimarota mine.

Rauhut has subsequently named that ilium Aviatyrannis jurassica (Rauhut, O. W. 
M. 2003. A tyrannosauroid dinosaur from the Upper
Jurassic of Portugal. Palaeontology 46:903-910).

There are also tyrannosauroid premaxillary teeth present in both the Morrison 
and the Guimarota (possibly referrable to either
Stokesosaurus and/or Aviatyrannis).

                Thomas R. Holtz, Jr.
                Vertebrate Paleontologist
Department of Geology           Director, Earth, Life & Time Program
University of Maryland          College Park Scholars
        Mailing Address:
                Building 237, Room 1117
                College Park, MD  20742

http://www.geol.umd.edu/~tholtz/
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