See _Barosaurus_ mount at the American Museum of Natural History: http://www.psihoyos.com/pages/home2.html. I think John Gurche painted
Yuck, this site changes images every 10 seconds.
Grabbed the direct link: http://www.psihoyos.com/pages/SlideShow/images/001Barosaurus.jpg
_Barosaurus_ and _Allosaurus_ as seen here.
See also _Jobaria_ mount: http://projectexploration.org/jobaria/PressReleases.html http://projectexploration.org/jobaria/Rearing9.html .
Dino Guy Ralph Docent at the California Academy of Sciences Dinosaur and Fossil Education Member of the Society of Vertebrate Paleontology