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Re: Cetiosauridae
At 10:48 PM 6/9/97 -0400, you wrote:
>What is the current thinking on the Cetiosauridae? Is there a monophyletic
>taxon by that name (aside from "whatever family _Cetiosaurus_ is in")?
Maybe. We have to wait and see how Paul Upchurch's restudy of the
Cetiosaurus material reveals. Patagosaurus might be a second cetiosaurid.
>How is _Haplocanthosaurus_ classed lately?
Upchurch classifies it as a camarasaurid; Calvo and Salgado consider
"Haplocanthosaurus" species to be the paraphyletic outgroup to
Diplodocimorpha (Diplodocoidea + Rebbachisaurus).
>_Cardiodon_?
Good question.
>_Austrosaurus_?
In some papers a few years back in Ameghiniana, some of the Argentines
considered it a member of the Titanosauridae-Brachiosauridae clade.
Thomas R. Holtz, Jr.
Vertebrate Paleontologist Webpage: http://www.geol.umd.edu
Dept. of Geology Email:th81@umail.umd.edu
University of Maryland Phone:301-405-4084
College Park, MD 20742 Fax: 301-314-9661