RE: Biogeographic origin of Diplodocidae

["Stewart, Dwight" <Dwight.Stewart@VLSI.com>]

Thanks!  Yes - that answers my question.  

Dwight

        -----Original Message-----
        From:   Adam Yates [SMTP:A.Yates@zoo.latrobe.edu.au]
        Sent:   Friday, September 18, 1998 1:06 AM
        To:     'Stewart, Dwight '
        Cc:     'dinosaur@usc.edu'
        Subject:        RE: Biogeographic origin of Diplodocidae

         



           <Is Apatosaurus actually considered a Diplodicid ATT?  I've heard
        arguments both ways.>

        I think the case for the placement Of Apatosaurus in Diplodicidae
s.s. is
        fairly solid,perhaps the most persuasive of characters that unite
        Apatosaurus with Diplodicus to the exclusion of Dicraeosaurus, is
the
        increase in the number of cervical vertebrae at the expense of the
trunk
        vertebrae.   


           Speaking of saurapods, is there anything recent on
Argentenosaurus?

        Not as far as I know. I think its remains still consist of the
rather
        incomplete material included in the original description, however
given the
        rate that discoveries seem to be made in South America, I wouldn't
be too
        suprised if some new material will turn up (or already has). Lets
hope!

        cheers
        Adam Yates