Re: Morrison Dinosaurs

[dinoboygraphics@aol.com]

"Plus some sauropod genera of controversial validity, like 
_Eobrontosaurus_ (?=_Camarasaurus_) and _Dystrophaeus_ "

I agree that Eobrontosaurus is a controversial (and IMHO unlikely) 
genus, but it is NOT Camarasaurus.  It is an apatosaurine diplodocid.  
Please, please, please everyone, go take a look at it yourselves if you 
don't want to take my word for it (certainly don't rely upon the type 
description!), but it is clearly a (largely unprepped) apatosaur.

Scott Hartman
Science Director
Wyoming Dinosaur Center
110 Carter Ranch Rd.
Thermopolis, WY 82443
(800) 455-3466 ext. 230
Cell: (307) 921-8333

www.skeletaldrawing.com

-----Original Message-----
From: Tim Williams <twilliams_alpha@hotmail.com>
To: dinosaur@usc.edu
Sent: Thu, 26 Jan 2006 21:47:53 -0600
Subject: Re: Morrison Dinosaurs

Ken Carpenter wrote: 
 
> Sauropods 
> Amphicoelias 58 m very rare 
> Apatosaurus 27 m common 
> Barosaurus 26 m rare 
> Brachiosaurus 23 m rare 
> Camarasaurus 18 m very common 
> Diplodocus 27 m very common 
> Haplocanthosaurus 21 m rare 
> Seismosaurus 33 m very rare 
> Supersaurus 40 m very rare 
 
There's also _Suuwassea_ (you'll kick yourself for forgetting that 
one). Plus some sauropod genera of controversial validity, like 
_Eobrontosaurus_ (?=_Camarasaurus_) and _Dystrophaeus_ (possibly a 
nomen dubium). _Dyslocosaurus_ might be from the Morrison. I don't know 
what to make of _"Apatosaurus" minimus_. 
 
Andrew McDonald wrote: 
 
> I believe that Palaeopteryx has been omitted. 
 
Probably a nomen dubium. It's a shame that a potentially iconic name 
like "Palaeopteryx" was squandered on indeterminate material. 
Interestingly, the name is not registered at Nomenclator Zoologicus. 
 
> How many specimens of 
> Marshosaurus are known beyond the type and the referred partial 
skeleton? 
 
Just those two, AFAIK. 
 
Cheers 
 
Tim