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>Date: Thu, 29 Feb 1996 16:15:37 -0500
>Errors-To: cnedin@geology.adelaide.edu.au
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>n a proposed new family of sauropods, the Andesauridae? I am
>familiar with the divison of sauropods into
>Vulcanodontidae, Cetiosauridae, Camarisauridae, Brachiosauridae,
>Diplodocidae and Titanosauridae, and the suggestion made several
>years ago that the following classes should be added: Barapasauridae
>(intermediate between Vulcanodontidae and Cetiosauridae), Dicraeosauridae
>(sometimes trated a a subfamily
>of the Diplodocidae: fairly similar but shorter necks), and Euhelopidae
>(Chinese sauropods with diplodocid like tails and chevron bones but
>Camarasaur like heads, e.g. Euhelopus, Mamenchisaurus, Omeisaurus.)  Now,  I
>understand that a new family of (mainly South American Upper Cretaceous)
>sauropods, all formerly classified as titanosaurids, has been proposed, the
>Andesauridae.  All of these sauropods were formerly classed as Titanosaurids.
> What is the justification for the new family; i.e. what special
>characteristics set the Andesauridae apart from the Titanosauridae? Could
>they be a subfamily of Titanosauridae?
>A related (maybe) question: where does Opithocoelicaudia fit in?

cnedin@geology.adelaide.edu.au                  nedin@ediacara.org
Many say it was a mistake to come down from the trees, some say
the move out of the oceans was a bad idea. Me, I say the stiffening
of the notochord in the Cambrian was where it all went wrong,
it was all downhill from there.