Definitions

[tidwell@ix.netcom.com (Virginia Tidwell )]

  I am currently doing some research into the sauropoda and have come 
upon a few descriptive terms with which I am not familiar.  Any help in 
this area would be greatly appreciated.

 1. opisthocoelous
 
 2. amphicoelous

 3. procoelous

    Also, can anyone recommend a good reference containing descriptions 
and drawings of all the various "pothoses" - prezygo, post, 
para,etc...?

                   Thank you for any info,
                          Virginia Tidwell