[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index][Subject Index][Author Index]
RE: The best formations for fossilizing Tyrannosaurids in?
> Date: Sun, 4 Dec 2011 00:52:11 -0800
> From: mickey_mortimer111@msn.com
> To: dinosaur@usc.edu
> Subject: RE: The best formations for fossilizing Tyrannosaurids in?
>
>
> Guanlong, Dilong and Tanycolagreus are there too, just listed as coelurosaurs
> closer to birds than tyrannosauroids.
oh.
sorry. I misspoke, then.
> The position of these taxa (and Coelurus, Eotyrannus, Proceratosaurus,
> Kileskus, Mirischia and Sinocalliopteryx) is uncertain, as preliminary
> studies suggest only a few steps are needed to switch their place from basal
> tyrannosauroids to slightly more closely related to birds than
> tyrannosauroids. For instance, Lee and Worthy's (2011) liklihood analysis of
> Xu et al.'s (2011) coelurosaur dataset found Eotyrannus, Dilong,
> Tanycolagreus and Coelurus to not be tyrannosauroids.
>
> Mickey Mortimer
>
> ----------------------------------------
> > Date: Sun, 4 Dec 2011 08:34:25 +0000
> > From: keenir@hotmail.com
> > To: dinosaur@usc.edu
> > Subject: RE: The best formations for fossilizing Tyrannosaurids in?
> >
> >
> >
> >
> > ----------------------------------------
> > > Date: Sun, 4 Dec 2011 00:14:17 -0800
> > > From: mickey_mortimer111@msn.com
> > > To: dinosaur@usc.edu
> > > Subject: RE: The best formations for fossilizing Tyrannosaurids in?
> >
> > thank you
> >
> > > Check out my website
> > > http://home.comcast.net/~eoraptor/Phylogeny%20of%20Taxa.html for the
> > > answers. The exception is Gorgosaurus and Albertosaurus,
> >
> > and three others. (Guanlong, Dilong, Tanycolagreus; but nobody's perfect)
> >
> >
> > that said, I appreciate the help you gave. (and the prompt response)
> >
> >
> > > which have incomplete entries. For Albertosaurus, Tanke and Currie (2010)
> > > detail the remains, which are all from the Horseshoe Canyon Formation of
> > > Alberta. For Gorgosaurus, most are from the Dinosaur Park Formation of
> > > the Judith River Group. There are probably fragmentary specimens referred
> > > to Albertosaurus and Gorgosaurus from other formations, but I'm not sure
> > > of their validity.
> > >
> > > Tanke and Currie, 2010. A history of Albertosaurus discoveries in
> > > Alberta, Canada. Canadian Journal of Earth Sciences. 47, 1197-1211.
> > >
> > > Mickey Mortimer
> > >
> > > ----------------------------------------
> > > > Date: Sun, 4 Dec 2011 02:43:08 +0000
> > > > From: keenir@hotmail.com
> > > > To: dinosaur@usc.edu
> > > > Subject: The best formations for fossilizing Tyrannosaurids in?
> > > >
> > > >
> > > >
> > > >
> > > > I was reading _Feathered Dinosaurs_ by J.Long and P.Schouten, and I
> > > > noticed that only some of the Tyrannosauroids mentioned a formation
> > > > they hail from.
> > > >
> > > > Which got me curious, so I thought I'd ask the experts:
> > > >
> > > > Which formations have given us the best/most complete fossils of each
> > > > genera?
> > > >
> > > >
> > > > _Tanycolagreus topwilsoni_ (?Tyrannosaurid?), Late Jurassic Morrison
> > > > Formation, 4 meters long.
> > > >
> > > > _Dilong paradoxus_, Early Cretaceous Yixian Formation, 1.6 meters long.
> > > >
> > > > _Guanlong wucai_, Late Jurassic, 3 meters long.
> > > >
> > > > _Alioramus remotus_, Late Cretaceous, 6 meters long.
> > > >
> > > > _Alectrosaurus olseni_, Late Cretaceous Iren Dabasu Formation &
> > > > Bayanshiree Svita (Omnogov), 5 meters long.
> > > >
> > > > _Appalachiosaurus montgomeriensis_, Late Cretaceous, 7 meter long
> > > > juvinile.
> > > >
> > > > _Tarbosaurus bataar_, Late Cretaceous, 14 meters long.
> > > >
> > > > _Tyrannosaurus rex_, Late Cretaceous, 12.5 meters long.
> > > >
> > > > _Daspletosaurus torosus_, Late Cretaceous, 9 meters long.
> > > >
> > > > _Albertosaurus sarcophagus_, Late Cretaceous, 9 meters long.
> > > >
> > > > _Gorgosaurus libratus_, Late Cretaceous, 9 meters long.
> > > >
> > > >
> > > > thank you.
> > > >
> > > >
> > >
>