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2. Yes Gorgosaurus is back. see T.Holtz, "Mesozoic Life" That is one
publication saying its back... cant give the exact page and numbers cause my
book is under a pile of some more books and i dont feel like digging it out.
Also think another publication on the way out, or somewhere to that may say
um how do they differ. I think one is judithian, the other is Two med. also
i think the gracile and robust skeletal bodies is part of it as well. that
info is also in a book in the same pile.
judith river formation:
_Albertasaurus sarcophagus_'Flesheating lizard from Alberta'
two medicine formation:
Gorgosaurus liberatus not sure on the name there.
Not a huge Tyrannosauridae fan so this is what i can rember. not sure if its
all right if its not i am sure Tom Holtz will let me know or someone else.
On Sun, 9 Dec 2001 00:25:16 +0100, email@example.com wrote:
Search the archives www.cmnh.org/fun/dinosaur-archive for more precise
answers, as all these questio
ns have been discussed repeatedly at length.
> 1.) Is _Siamotyrannus_ real member of T-dae family?
Probably it is a sinraptorid instead.
> 2.) Is _Gorgosaurus_ considered a valid genus?
By many. Depends on the still unresolved phylogeny.
> And if so, how does it differ from _Albertosaurus_?
Both *Gorgosaurus* and *Albertosaurus* consist of one species each; that
the species are different h
as not been questioned so far, I think.
> 3.) How are distinguished members of Tyrannosaurini taxon from less
> advanced tyrannosaurids?
I think Tyrannosaurini is the most recent common ancestor of
*Daspletosaurus torosus* and *Tyrannosa
urus rex*? Has it got a published definition at all?
This taxon is not mentioned at
roidea&dynnodeid=12613, so I can't find its supporting characters.
> 4.) Is _Jenkhiskhan_ the same as _Tarbosaurus_?
> 5.) Was "T. rex" a scavenger or an agile hunter?
Quite an agile hunter, able to run fast. Being a terrestrial scavenger
seems to be impossible.
The phylogenetic analysis raises more problems than it solves, but
exposing these new problems may s
timulate the search for the missing answers.
on p. 1245 of
Michel Laurin & Robert R. Reisz: A new study of *Solenodonsaurus
janenschi*, and a reconsideration o
f amniote origins and stegocephalian evolution, Canadian Journal of Earth
Sciences 36, 1239 -- 1255
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Paleo Mont Park - www.geocities.com/paleo_montpark
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