"lateral vein"

["Jordan Mallon" <j_mallon@hotmail.com>]

Well, since I'm apparently clueless on the subject, and can't find info 
anywhere else, I figured I might as well ask: what's the deal with that 
giant vein that is shown running laterally down the neck and across the 
belly of so many illustrated dinosaurs (especially apparent in the works of 
Greg Paul)?  If memory serves me correct, I seem to recall seeing something 
similar in cattle.  Is it certain by any means that dinosaurs had this?  
Would I be wrong in leaving out of an illustration?

Thanks,

Jordan Mallon

http://www.geocities.com/paleoportfolio/
AIM: jslice mallon

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