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Re: Questions: Giant Allosauroids and
>Hmmm... So now we have:
>-Allosaurus (Epantarias? Saurophagus?) amplexus
You forgot the Tendaguru allosaur and *Chilantaisaurus*, both which may
have exceeded 35ft.
>All giant, multiton Allosaur-like animals. How do these guys fit
>togther? Does anyone know for sure?
My theory was posted a few days ago, though I am no expert. Tom Holtz
can help, I'm sure, as may a few others, but if we could get Phil Currie
on the list . . .
>And just what exactly is "Big Ed"? When was it discovered?
>Also, seeing the reconstruction of Giganotosaurus, the body doesn't
>seem that much bigger than Carcharodontosaurus, but--that thing has a
>freakin' oversized head!
Well, there are differences, but *Carcharodontosaurus* is based on
remains that are very meager and have less length-indicative pieces as
vertebrae, though the femur does help. Size is estimable.
>On a similar note I'd be interested to know what exactly the top
>carnivores were at the end of the Cretaceous in South America, Africa
>and Australia. As well as in Europe and the eastern part of North
>America, and just how big they got.
*Abelisaurus comahuensis* Bonaparte & Novas, 1985 / ~30ft -- estimate on
The only other one that comes close is ~25ft *Megaraptor namunquahuii*
Novas, 1996 [?] or *Unenlagia comahuensis* [?] ~10-15ft and possibly
juvenile of *Megaraptor* as has been proposed, where *Unenlagia* would
have priority; but these occured in the Turonian/Santonian.
This continent seems devoid of latest Cretaceous archpredators, with
*Deltadromeus*, *Carcharodontosaurus*, and *Spinsaurus* all occuring
earlier than the Maastrichtian, and then there's that "Allosaurus
tendagurensis" from Tanzania's Tendaguru Hill, but he's from a lot
earlier than any of the others.
The youngest bones from Australia refer to *Austrosaurus* sp. of
Cenomanian bend, but otherwise *Rapator* and the astragalus refered to
as "Allosaurus sp." are of Victorian Valanginian-Albian age, and thus to
All listed above are the sizeable fossils, and I will state that my
source was _Encyclopedia of Dinosaurs_ [Currie & Padian, 1997] for most
of this info.
Jaime A. Headden
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