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R: Tyrannosaurs, dwarf, early, and otherwise...
Da: Thomas R. Holtz, Jr. <firstname.lastname@example.org>
A: email@example.com <firstname.lastname@example.org>
Data: martedì 13 luglio 1999 17.30
Oggetto: Tyrannosaurs, dwarf, early, and otherwise...
>Earliest tyrannosaurids: _Alectrosaurus olseni_ is the oldest named
>tyrannosaurid. Older material includes teeth from Aptian-Albian of Asia
>the Cenomanian of North America. If _Siamotyrannus_ is a tyrannosaurid, it
>is even older (Barremian). _Stokesosaurus_ (a Late Jurassic form) has been
>referred to Tyrannosauridae or Tyrannosauroidea, and is even older still;
>its placement here, however, remains uncertain.
Sorry, but I don't think that Siamotyrannus is an earliest Tyrannosaurids, I
think that _Siamo_ is a Sinraptoridae, there are some evidence in the pelvic
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